Robin carries the trash from the house to the garbage cans which statement best describes the science of what he

Researchers studied mice embryos to determine whether the cells of the ear bones originated from the same embryonic cells as the

Rina8888 [55]

The researchers will use mice instead of opossums or humans to determine whether the cells of the ear bones originated from the same embryonic cells as the cells that form the jaw in other vertebrates because in this type of experiment, organisms that are ideal are the ones that have a short life span, easy to be researched on and easy to mantain.

It will be very tedious and demanding to use opossums and humans in this type of practical experiment because,it is against the culture and norms guilding human living and existence to use humans as model organisms,opossums as well are very bad model organisms because unlike the mice,opossums are long lived and it will be very difficult to raise and maintain an opossum in a laboratory.

Humans and mice are both mammals just that human is a higher mammal but they share similar features in terms of pattern of development,though there is a clear difference during their early development,so because of the common ancestry shared by the mice and humans,the result of the experiment on the mice with share a close similarity with the pattern that is expected in humans.

8 0

3 years ago

For fuel to be useful, energy must be released A.as heat or light B.in a controlled way C.contimuously D.over a long period of t

Aloiza [94]

I think it's B. but not sure

8 0

4 years ago

Read 2 more answers

The purple spots on colorless background of corn kernels observed by barbara mcclintock were the result of _______.

vitfil [10]

The purple spots on the colorless background of corn kernels observed by Barbara McClintock were the result of the transposition of the Ds elements out of the color gene.

<h3>What are the genetic elements found in corn?</h3>

A transposable element is removed from one spot in the DNA and inserted into a different site in the DNA during the process of genetic transposition, which allows genes to shift their location on chromosomes.
The first recognized genetic instability was caused by genetic transposition.
The size of the tissue patch displaying the reversion phenotype increases as a reversion event happens earlier in the kernel development.
Barbara McClintock saw purple dots on maize kernels with an otherwise colorless background.
These spots were caused by the Ds components of the color gene being transposed.
The wild-type (purple) phenotype manifests itself in cells where Ds from the color gene "C" sequence has been lost.

Hence, Barbara McClintock discovered purple patches on the colorless backdrop of maize kernels due to the transposition of the Ds elements out of the color gene.

To learn more about Transposition refer to:

brainly.com/question/13447171

#SPJ4

8 0

2 years ago

The scientific study of heredity

muminat

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bit. $^{}$ ly/3a8Nt8n

4 0

3 years ago

Select the correct answer from each drop-down menu.

4vir4ik [10]

Explanation:

Amylase is a digestive enzyme secreted and is responsible for breaking down <u>starch.</u>

Digestion describes the intake, chemical and physical breakdown, absorption of nutrients and excretion of food. Alpha amylase, an enzyme produced in the pancreas, is found in human saliva; it catalyzes the breakdown of starch into glucose

Further Explanation:

Food is chemically and mechanically broken down into into smaller particles. This begins in the mouth, where food is mechanically crushed by the teeth, and mixed with saliva to allow water based enzymes like lingual lipase and amylase to work;- it's then transported to the stomach via the esophagus.

Alpha amylase, an enzyme produced in the pancreas, is also found in human saliva; it catalyzes the hydrolysis, or breakdown of starch into glucose in the stomach as gastric amylase. Amylase acts on polysaccharides bonds at random points along the chain by splitting the α 1-4 glycosidic bonds.