From this diagram of fossils (sorry it’s a bit blurry) which layer is the youngest and which layer is the oldest? How do you know?

Answer:

Castration is any action, surgical, chemical, or otherwise, by which an individual loses use of the testicles. Castration may be accomplished by physical, chemical or hormonal techniques. Testicles may be removed surgically or killed by obstructing the blood supply. Young calves may be castrated with rubber rings.

Answer:

Explanation:

Available data:

Genotypes                                          Phenotypes

EETT, EeTT, EETt, EeTt                     Square eyes and Long tail

eeTT, eeTt                                          Round eyes and Long tail

EEtt, Eett                                             Square eyes and Short tail

eett                                                      Rounf eyes and short tail.

1. An individual of this new species is heterozygous for gene E and heterozygous for gene T. What is their genotype and phenotype?

The heterozygous individual is E/e ; T/t, expressing square eyes and a long tail.

2. Two individuals, who are both heterozygous for eye shape and tail size, mate. Which of the following is a correct statement about the phenotype ratios expected for their offspring?

Cross: between two heterozygous individuals

Parentals) EeTt    x     EeTt

Gametes) ET, Et, eT, et

                ET, Et, eT, et

Punnett square)  .   ET        Et        eT       et

                  ET     EETT    EETt    EeTT    EeTt

                  Et      EETt     EEtt     EeTt      Eett

                  eT    EeTT    EeTt    eeTT     eeTt

                   et     EeTt      Eett     eeTt      eett

F1) Genotype:

      Phenotype

Phenotypic ratio 9:3:3:1

3. From the mating described in question ABOVE, what proportion of ALL of the offspring in will be heterozygous for both traits?

4/16 = 1/4 = 25% of the progeny are expected to be heterozygous for both traits, EeTt.

Answer:

second trimester

Explanation:

The second trimester, which is week thirteen to week twenty four, the foetus would have develop enough to be picked up by the ultrasound scan. At this stage, the doctor can easily determine the sex of the foetus whether it is a boy or a girl.

The second trimester, which is week thirteen to week twenty four, the foetus would have develop enough to be picked up by the ultrasound scan. At this stage, the doctor can easily determine the sex of the foetus whether it is a boy or a girl.

During this trimester, morning sickness typically subsides as well as the acute fatigue and breast discomfort. Your fetus has completed the development of all of its organs and systems and is about to start expanding in size.

For most women, the second trimester is the most physically satisfying. During this time, morning sickness typically subsides, and the intense fatigue and breast discomfort usually go away.

Human chorionic gonadotropin levels have decreased, and estrogen and progesterone levels have changed, which can be linked to these alterations.

Therefore, The second trimester, which is week thirteen to week twenty four, the fetus would have develop enough to be picked up by the ultrasound scan. At this stage, the doctor can easily determine the sex of the fetus whether it is a boy or a girl.

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the RNA is the daughter cell of DNA

I hope it's helpful for you

Answer.....

Explanation:

Answer:

The correct answer is - A. Tight DNA packing tends to promote gene expression.

Explanation:

Euchromatin which is less packed or condensed is highly expressed as it participates in the transcription whereas highly compacted chromatin - heterochromatin not expressed at all as these does undergoes the transcription process.

DNA binds around a core of 8 subunits of Histone protein in a nucleosome in which DNA is negatively charged and histone protein is positively charged protein .

DNA packing decreases its transcription and hence no expression.

Answer: A.

Explanation:

Parent material

Answer:iii. 6

Explanation: the RBC will enter from the superior vena cava into the right atrium then enters the right ventricle. Then it goes into the lungs through pulmonary artery from lungs it enters the left atrium through pulmonary vein and then enters the left ventricles and from left ventricles it enters the aorta.

Answer:

i. boron

ii. silicon

iii. germanium

iv. arsenic

v. antimony

vi. tellurium

vii. polonium

Explanation:

Elements that have appearance and properties of a metal but behave like non-metal in certain conditions are called semi-metals or metalloids. On the periodic table, they are found between metals and non-metals. Examples are astatine, polonium, tellurium, antimony, arsenic, germanium, silicon, boron.

Some of their properties that make them look like metals are:

i. They exist as solids at room temperature.

ii. They are shiny.

iii. They are ductile.

Some of their properties that make them look like non-metals are:

i. They are brittle.

ii. Not very good conductor of electricity compared to metals.

The seven elements have the appearance and properties of metal but behave like non-metal in certain situations.

I. boron

ii. silicon

iii. germanium

iv. arsenic

v. antimony

vi. tellurium

vii. polonium

Elements which have look and residences of a steel however behave like non-steel in sure situations are referred to as semi-metals or metalloids. On the periodic table, they're determined among metals and non-metals. Examples are astatine, polonium, tellurium, antimony,arsenic, germanium, silicon, and boron.

Some in their residences that cause them to seem like metals are:

i. They exist as solids at room temperature.

ii. They are shiny.

iii. They are ductile.

Some in their residences that cause them to seem like non-metals are:

i. They are brittle.

ii. Not an excellent conductor of strength in comparison to metals.

Metals are opaque, lustrous factors that might be the right conductors of warmth and electricity. Most metals are malleable and ductile and are, in general, denser than the opposite elemental substances.

Thus it is clear that the above answers are well explained.

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Answer:

25 - m

Explanation:

If Carl worked m less than 25, 25 - m would represent the amount of time Davis worked minus the difference in the amount of time that he and Carl worked, which would equal the amount of time Carl worked.

Answer:

They are similar in that both involve the growth of new organisms in an environment. However they differ in that primary succession occurs in a place where no life had been before, while secondary succession occurs in place where life had been before, but was destroyed.

Some examples of primary succession include the formation of a new ecosystem after a volcano, glacier outbursts, or a nuclear explosion. Some examples of secondary succession include succession after fire, harvesting, logging, or abandonment of land or the renewal after a disease outbreak.

Answer:

In primary succession, newly exposed or newly formed rock is colonized by living things for the first time. In secondary succession, an area that was previously occupied by living things is disturbed, then re-colonized following the disturbance.

Answer:

The answer is "Choice e".

Explanation:

The additional Trp Operon function is gene expression attenuation. If tryptophan levels are high, RNA Polymerase endings of glutamate operone are favoured, since the excess of Trp-tRNATrp load causes rna to rapidly synthesise the lead polyprotein and region iii base pairs with cluster 4 and creates stepping chain structures which signal mrna cessation. Rest both options are wrong in regards to the glutamate operon amplification transmission termination mechanism.

Answer:

The impact of so many humans on the environment takes two major forms: consumption of resources such as land, food, water, air, fossil fuels and minerals. waste products as a result of consumption such as air and water pollutants, toxic materials and greenhouse gases.

hope it helps

Answer:

Down below

Explanation:

The main drivers of antimicrobial resistance include the misuse and overuse of antimicrobials; lack of access to clean water, sanitation and hygiene (WASH) for both humans and animals; poor infection and disease prevention and control in health-care facilities and farms; poor access to quality, affordable medicines.

Answer:

true

Explanation:

triclinic, monoclinic, orthorhombic, tetragonal, hexagonal, and cubic.

have a nice day/night

may  i please have a branlliest

Answer:

6...

Explanation:

Answer:

Cell, nucleus, chromosome, gene

Answer:

Nucleotide, Gene, DNA, Chromosome, Nucleus, Cell, Organism.

hope this helps

Answer:

columbia, indonesia, and madagascar

Explanation:

i took the test

Among these alternatives, the country with high biodiversity found threatened is in Madagascar.

70% of the species that inhabit these islands are totally unique in the world. Its great wealth of biodiversity ranges from

In addition, during the last decade,

Even so, 75% of its forests have disappeared in recent decades; therefore, urgent measures must be taken to prevent this phenomenon.

With this information, we can conclude thatthe country with high biodiversity found threatened is in Madagascar.

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Answer: i dont know

Explanation: maybe there is something very special about it

Answer:

rejection of the transplanted organ would not be expected

Explanation:

Transplantation refers to 1-the movement of an organ/tissue/cells from one part of a person's body to another part, and 2-the movement of an organ/tissue/cells from one individual (donor) to another individual (recipient). An autograft is a type of transplant by which a patient receives his/her own tissue. For example, a skin autograft consists of a patch of skin that is removed from one area of the body and transplanted to another body region of the same individual. Skin autograft is a relatively common transplantation process used to repair wounds and restore skin function. In rats, the mechanism of skin autograft rejection has been reported as uncertain. Moreover, transplant rejection is a natural mechanism by which the immune system of a person does not recognize the transplant as its own, thereby attacking the transplanted organ/tissue. The autograft rejection reactions are relatively uncommon but they depend on the type of organ/tissue/cells to be transplanted.

Answer:

I don't know what your asking beore specific.

Answer:

Ruminants include cattle, sheep, goats, buffalo, deer, elk, giraffes and camels. These animals all have a digestive system that is uniquely different from our own. Instead of one compartment to the stomach they have four. Of the four compartments the rumen is the largest section and the main digestive centre

Answer:

I think it would be chlorine

Explanation:

because chlorine has 15 protons and 17 neutrons

Answer:

Aren't they brothers and sisters

Answer:

The queen had all made them, so theyre brothers and sisters.

Answer:

The main difference between chromatin and chromosome is that chromatin consists of the unravelled condensed structure of DNA for the purpose of packaging into the nucleus whereas chromosome consists of the highest condensed structure of the DNA doublehelix for the proper separation of the genetic material between

Answer:

To remove impurities.

Explanation:

Minerals are processed in order to remove impurities from the minerals as well as getting clean minerals. If the minerals are not clean from impurities, it can't be used in the manufacturing of other products. Tailings are the materials that left over after the process of separating the mineral from the uneconomic fraction or residue of an ore. Tailing stored in water can be dangerous sources of toxic chemicals, such as heavy metals, sulfides and radioactive content that can adversely affected the biotic or living part of water.

The outer layer of the onion cell contains cellulose as compared to the skin cell, hence option B is correct.

3,000 or more glucose molecules make up the complex carbohydrate or polysaccharide known as cellulose.

The most prevalent of all naturally occurring organic substances, cellulose is the fundamental structural element of plant cell walls and makes up about 33% of all vegetable matter (it makes up 90% of cotton and 50% of wood).

The majority of all naturally occurring organic materials are composed of cellulose, which makes up roughly 33%, 50%, and 90% of all vegetative plants, cotton, and wood, accordingly.

Therefore, it decides the shape of the plant and enables the plant to grow upright, cellulose gives plant cells their stiffness, hence option B is correct.

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Answer:

Chemicals and hazardous substances controlled by the Toxic Substances Control Act (TSCA) include all of the following except

bisphenate.

Chemicals and hazardous substances controlled by the Toxic Substances Control Act (TSCA) include all of the following except _____.

polychlorinated biphenyls

bisphenate✓

radon

asbestos