The peppered moth provides a well-known example of natural selection. The light-colored form of the moth was predominant in England before the Industrial Revolution. In the mid-nineteenth century, a dark-colored form appeared. The difference is produced by a dominant allele of one gene. By about 1900, approximately 90% of the moths around industrial areas were dark colored, whereas light-colored moths were still abundant elsewhere. Apparently, birds could really find the light morhs against the soot-darkened background in industrial areas and, therefore, were eating more light moths. Recently, use of cleaner fuels has greatly reduced soot in the landscape, and the dark-colored moths have been disappearing.

1.What forces are causing evolutionary change in these populations?
2. Should the two forma be considered separate species?
3. How would you determine if these are separate species?
4. Give a prediction for what future generations of moths will look like and explain why.

Answers

Answer 1

Answer:

a) Natural selection

b) Different

c) Different genotypes

d) Evolution of dark colored moth species from the light colored moth species

Explanation:

a) The pressure of selection due to the changing color of bark of tree because of air pollution caused by industries leads to natural selection in a way that dark colored moth are emerging

b) Yes the two forms of moths are two different species.

c) The genotype of the two species is different

d) All the moths will be of dark color in order to save themselves from predation. This will lead to evolution of dark colored moth species from the light colored moth species and hence will lead to extinction of light colored moth


Related Questions

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What information would you like to know / obtain when interviewing someone that helps the Environment

Answers

Answer:

talking about the type of work environment you prefer is a great way to show employers that interviews are a chance for potential employers to find out who you are as a person and to Other versions of this question are, “What type of person do you work well with

Explanation:

I THINK IT WILL HELP FOR OTHERS

30 POINTS AND BRAINLIEST!
To measure a population’s baseline genetic state, it must have _____________ to be in Hardy-Weinberg equilibrium.

A) Gene Flow

B) Random Mating

C) Selection

D) Mutations

Answers

Answer:

Random mating

hope it helps!

There are five basic Hardy-Weinberg assumptions: no mutation, random mating, no gene flow, infinite population size, and no selection. If the assumptions are not met for a gene, the population may evolve for that gene (the gene's allele frequencies may change).

To measure a population’s baseline genetic state, it must have random mating to be in Hardy-Weinberg equilibrium (Option B).

The Hardy-Weinberg principle state that the genetic variation in a population will remain constant across generations in the absence of different evolutionary forces.

The Hardy-Weinberg assumptions include random mating, no mutation, no gene flow, infinite population size, and absence of selection.

In consequence, random mating acts to prevent any change in the allele frequencies.

In conclusion, to measure a population’s baseline genetic state, it must have random mating to be in Hardy-Weinberg equilibrium (Option B).

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In which ecosystem are animals mostly active at night? desert tundra grassland taiga​

Answers

Don't open the link.



Also the answer is desert. This is because the animals tend to avoid more heat.

PLEASE HELP i need it within like 10 mins

Answers

Answer:

2

Explanation:

Its 2 because it can be absorbed

Answer:

deep snow melting not 100% sure tho

HELP GIVING BRAINIEST!


escribe an adaptation to a plant's physical characteristic and explain how this adaptation helps the plant survive.

explain.

Answers

Answer:

so like a plant that loses leaves in the fall does so because it won't have sun in the winter. then they grow back. it adapts to the environment

Answer:

Pi is a number that is approximated by 3.14, or 22/7. It is the ratio of the circumference to the diameter of any circle. This ratio can be rearranged to find circumference of a circle by multiplying pi times diameter.

Explanation:

yeah i missed the answer just to get that and this guy talking about PLANTS. N e ways there u go.

True or false: according to natural selection, all organisms will have an equal chance of survival no matter what their traits are

Answers

No, some animals (at the bottom of the food chain) suffer according to natural selection while other animals who are stronger (likely predators) Will succeed more and have a better chance of survival

PLEASE HELP ASAP! PLEASE DO NOT GIVE ME A VIRUSES!
Carbon dioxide and oxygen are linked together in the carbon and oxygen cycle. There are two cellular processes involved in this cycle. What are they called, and what does each process make?


Mark two answers below.

Carbon dioxide is generated by cellular respiration and released into the atmosphere.

Cellular respiration makes oxygen that plants and animals can release into the atmosphere.

Carbon dioxide is a product of photosynthesis that plants release into the atmosphere.

Photosynthesis makes oxygen that plants can release into the atmosphere.

Answers

Answer: Photosynthesis makes oxygen that plants can release into the atmosphere.

Explanation:

Before the 1st cell division, describe what the chromosomes appear to do.

Answers

Answer: The chromosomes condense and the spindles assemble, then each set of chromosomes is surrounded by a nuclear membrane, and then the parent cell splits into two complete daughter cells.

Explanation:

Which three terms best describe the level of organization of life shown in this photo? A. Ecosystem I B. Biosphere C. Biotic factors D. Abiotic factors​

Answers

Answer:

A???

Explanation:

I think it would be A. Ecosystem, bet don't quote me on that

Answer:

Explanation:

A, B, D

How do emission and reflection nebulae differ? (1 point)
the presence of young stars
contain remnants of stars
hard tine edges
interactions with light

Answers

Answer:

interactions with light

Explanation:

Answer: yes it is D)Interactions with light

Explanation:

Identify the missing parts of the carbon cycle.

Answers

Combustion of fossil fuels release massive amounts of carbon dioxide
I am sure 100%
Good luck

Answer: The answer is this

Explanation: I’m not a 100% sure if this is the answer you were looking for lol good luck

DNA carries the genetic code for all of the traits possessed by an organism. DNA code is used to make proteins in the ribosomes.
Above is a model of DNA. Your lab partner is confused about what the model is showing. How would you explain is to him? Select
ALL that apply.
A)
Chromosomes (D) are small segments
DNA (A) that code for one protein.
B)
DNA (A) is the genetic material found in the nucleus (C) of all cells (B).
C)
Genes (E) are small segments of DNA (A) on a chromosome (D) that code
for one protein.
At division, DNA (A) shortens and condenses into discrete segments of DNA
called chromosomes (D).
D)
E)
DNA (A) is made of chromosomes (E) that are organized into genes (D) in
the nucleus (C) of the cell.

Answers

Answer:b,c,d

Explanation:

They usa test prep told me

A watershed, also known as a drainage basin, is an area of land where water drains to a central point like a lake river or an ocean. natural vegetation in the landscape, helps maintain the natural flow of Regine of water and rapid change in water level in lakes and wetlands. imagine a position of a wetland that has changed as scenes in the image. predict what will happen to the natural flow of water is natural vegetation as replaced by impervious surfaces

A) groundwater flows increase to its endpoint causing flooding

B) runoff will increase and less water will penetrate the soil to become groundwater

C) groundwater will puddle up and remain in one place instead of flowing to a central point

D) impervious surfaces such as roads and parking lots will divert water flow and it will not reach its endpoint

Answers

Answer:

B) runoff will increase and less water will penetrate the soil to become groundwater.

D) impervious surfaces such as roads and parking lots will divert water flow and it will not reach its endpoint

Explanation:

The runoff will increase and less water will penetrate into the soil to become groundwater if natural vegetation is replaced by impervious surfaces. The natural vegetation helps to lower the speed and intensity by absorbing large amount of water. Due to this absorbing, there is an increase occur in the concentration of groundwater level which increases underground water reserves for the coming generations. These impervious surfaces also act as a barrier that diverts water and prevents the water to reach to its ending point.

B is the correct answer.

How is your body temperature held constant?​

Answers

 The elasticity of those capillaries plays a central role in our ability to maintain constant body temperatures. When there's too much heat in the body, our capillaries automatically expand and increase the blood flow to the skin, allowing the excess heat to transfer to the air.

Heating by direct contact between particles is called __________

Answers

Answer:

conduction.

Explanation:

Which statements describe the synapse? Select all that apply
It carries information through electrical impulses to the cell body
It is part of the neuron.
It ensures that information travels in one direction only.
It carries information through chemical impulses to the cell body,
It is the gap between neurons
It ensures that information travels in multiple directions

Answers

Answer:

It ensures that information travels in one direction only.

It is the gap between neurons.

Explanation:

It's correct

Answer:

Explanation:

It ensures that information travels in one direction only.

It is the gap between neurons.

A group of puppies have different fur colors. This is an example of
organism diversity
ecosystem diversity
genetic diversity
species diversity

Answers

genetic diversity

Explanation:

Which describes how "Work Smarter, Not Harder" and "The Crow and the Pitcher" present the theme?

A The crow fills the pitcher with stones, and Kari pulls the field out from under the snow.

B The crow is challenged by the half-full pitcher, and Kari faces the board listing chores.

C Both the crow and Kari work slowly and steadily at their tasks.

D Both the crow and Kari must complete tasks in order to gain a reward.

Answers

Answer:I don’t know sorry

Explanation:

Answer: D

Explanation:

Please help with biology!!

Answers

Answer:

It increases the production of goods and made our life easier.

Explanation:

The main advantages of technology is that it increases the production of goods and made our life easier while on the other hand, the disadvantages of technology is that it make people lazy and make people socially disconnect from each other. The advantages of technology is that it helps to fulfill the demands of the population and decrease malnutrition problems in the population whereas the disadvantages of technology in food is that it causes many health problems and has low quality. Technology causes many damages to our health as well as our society. It causes pollution in the environment that changes the ecosystem and also leads to the extinction of various species.

Who is the father of taxonomy?
A. Carl Sutton

B. Robert Hooke

C. Charles Darwin

D. Carolus linnaeus

Answers

Answer:

☄ [tex] \boxed{ \boxed{ \pink{\large{ \tt{Carolus \: Linnaeus}}}}}[/tex]

☂ [tex] \underline{ \underline{ \purple{\large{ \tt{E \: X \: P \: L \: A \: N \: A \: T \: I \: O \: N}}}}} : [/tex]

Carolus Linnaeus ( 1707 - 1778 ) is called the father of taxonomy.

Q. Why is Carolus Linnaeus called the father of taxonomy ?

Ans : Well , Carolus Linnaeus is called the father of taxonomy because he classified about 5900 species of plants and 4000 species of animals into two kingdoms : plant and animal.

♪ Hope I helped! ♕

♨ Have a wonderful day / night ! ☃

✎ [tex] \underbrace{ \overbrace{ \mathfrak{Carry \: On \: Learning}}}[/tex]

▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁▁

Question:

☞ Who is the father of taxonomy?

Answer:

D. Carolus Linnaeus

☞ Did you know that taxonomy is the place of identifying different organisms, classifying them into categories and naming them. Then, All organisms, both living and extinct are classified into distinct groups with other similar organisms and given a scientific name.

☞ Did you know that Carolus Linnaeus is the father of taxonomy. His ststem for naming, ranking, and classifying organisms is still in wide use today (with many changes). He was a swedish botanist, physician and zoologist who formalized binomial nomenclature, the modern system in naming organisms.

_________

#LetsStudy

What are some natural processes that are affected by conduction?

Answers

Answer:

Conduction: Touching a stove and being burned. Ice cooling down your hand. Boiling water by thrusting a red-hot piece of iron into it.

Explanation:

...................

Most organisms have a fight-or-flight response when they sense danger. In mammals, two organ systems work together to produce this response.

Which of these body systems is involved in the information above?
Select one:

respiratory and circulatory

nervous and digestive

respiratory and excretory

nervous and endocrine

Answers

Answer:

Nervous and endocrine

Explanation:

The nervous system triggers the endocrine system to produce hormones that cause fight or flight

state one similarity and one difference between parasitic and predatory modes of feeding​

Answers

Answer:

The parasite obtains food and shelter from the host. Parasitism mode of life ensures food lodging and meals predatory modes is a relationship between a Predator and a Prey in which the predator is a living organism that catches and kills another species for food. They do not get shelter from prey.

Brown fur is dominant to white fur in rabbits. If a purebred white rabbit mates with a heterozygous brown rabbit: a. What are the genotypes and phenotypes that will be present in their offspring? b. What percentage of their offspring will be white?

Answers

answer: The parents' genotypes are BB and Bb. The offspring's genotypes are 50% BB, 50% Bb, which means their phenotypes are 100% brown.

Answer: a. brown (Bb) and white (bb) offsprings

b. 50% of the offsprings will be white

Explanation:

Describe the role of photosynthesis and cellular respiration in ecosystems.

Answers

Answer:

photosynthesis and cellular respiration allow the carbon and oxygen that organisms consume and produce to be cycled through the ecosystem. They work together so that what is made from one process is used in the other. Without them the ecosystem would run out of carbon dioxide and oxygen, and everything would die.

When does DNA replication occur within the cell cycle?

Answers

Answer:

Interphase

Explanation:

The S phase of a cell cycle occurs during interphase, before mitosis or meiosis, and is responsible for the synthesis or replication of DNA. In this way, the genetic material of a cell is doubled before it enters mitosis or meiosis, allowing there to be enough DNA to be split into daughter cells.

1. All of the following are correct statements about enzyme regulation EXCEPT: a. Enzymes can be inhibited by the products they produce. b. Enzymes can be inactivated by the addition of a functional group. c. Coenzyme and substrate availability can regulate enzyme reaction rate. d. The reaction rate slows as equilibrium is approached. e. The activity of an enzyme is covalently affected by allosteric regulators. ANSWER: e 2. All of the following are examples of a zymogen and its activating protease EXCEPT: a. chymotrypsinogen and chymotrypsin. b. procarboxypeptidase and elastase. c. proelastase and elastase. d. pepsinogen and pepsin. e. trypsinogen and trypsin. ANSWER: b 3. Proinsulin is converted into insulin by: a. proteolytic excision of a specific peptide. b. allosteric binding of glucose. c. phosphorylation to the active form. d. removal of phosphate by converter enzymes. e. none of the above. ANSWER: a

Answers

Answer:

1-For the first one, the statement which is not correct about enzyme regulation is the statement e which is The activity of an enzyme is covalently affected by allosteric regulators

2-The example which does not have a zymogen and activating protease is example b which is procarboxypeptidase and elastase.

3-The process by which proinsulin is converted into insulin is by method a which is proteolytic excision of a specific peptide.

Explanation:

1-All the other statements are correct as indicated below:

a-Enzymes can be inhibited by the products they produce. This is true because the rate of production is reduced in cases of some products. this indicates that the enzymes are not being able to further act.

b-Enzymes can be inactivated by the addition of a functional group. This is true because enzymes can be activated and inactivated manually.

c-Coenzyme and substrate availability can regulate enzyme reaction rate. This is true because lack or shortage conenzyme or substrate can reduce the reaction rate due to lack of availability of required components.

d-The reaction rate slows as equilibrium is approached. This is true as the reaction reaches equilbrium less products are converted back to reactants and less reactants are converted into products.

2-

Similarly all the other examples for 2 have either an activating protease or zymogen except procarboxypeptidase and elastase.

3-

The proinsulin has a specific peptide which is excised thus only option a is correct.

Which process best explains how antibiotic resistance in bacteria can occur?

Answers

Answer:

Antibiotic resistance is a consequence of evolution via natural selection. The antibiotic action is an environmental pressure; those bacteria which have a mutation allowing them to survive will live on to reproduce. They will then pass this trait to their offspring, which will be a fully resistant generation.

(E
Complete the following sentence.
The ability of an animal to produce offspring or food products is called its

Answers

Answer:

Fecundity should be correct

Your friend Joe has a younger brother Sam and two older sisters. Sam has a strange disorder that has caused his hair to turn green. The doctor says that this is caused by a single gene that is inherited, and that boys are more likely to have green hair then girls. However Joe, his sisters, and both of his parents have normal hair color. Joe does not know much biology and is confused. Explain to Joe how his brother's condition could have arisen even though Joe has normal hair. Then discuss the likelihood that a) Joe, and b) Sam will have children with green hair. Assume that they both marry women with normal hair color. You will need to include information on meiosis and transmission of genes to assure that Joe understands. HINT: As part of your answer, indicate the percent of girls vs. boys that you predict would have green hair if fathered by Joe vs. Sam.

Answers

Answer:

The correct answer is - it is due to the case of sex-linked recessive disorder.

Explanation:

It is pointed out by the doctor that Sam has a condition due to recessive allele and it is given that boys have this condition more than girls which suggests that it is a sex-linked recessive disorder. This comes from their parents but it is given that the father has normal hair which means the father has no recessive allele, then it must come from the mother even mother has not this condition but she could be a carrier for this trait.

Joe and his sister do not have this condition as they get the normal dominant allele from mother and father.

The chances of being a carrier by his sisters are 50%. If Joe marries

IF Joe marries a non-carrier woman, he will have all normal children with no green hair. IF Joe marries a normal hair color carrier women then there would 25% chances of being diseased offspring and 50% chances of being a carrier, and if women is completely normal then all offspring will be normal.

carrier woman, his children will have a 25% chance of being green-haired. A 25% chance of being

IF Sam marries a normal woman, the children will have a 25% chance of being a carrier, a 25% chance of being green-haired, and a 50% chance of being normal.

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