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Misha Larkins [42]
3 years ago
5

this figure shows a hierarchy of organism, the ones at the top are the more complex and therefore more evolved. Agree or disagre

e? why?

Biology
1 answer:
DENIUS [597]3 years ago
8 0

Answer:

this figure shows a hierarchy of organism, the ones at the top are the more complex and therefore more evolved. Agree or disagree? why?

Agree

Reason being that the complexity of the highest hierarchy makes evolution to occur whereby different pedigree resulted from it to form lesser or smaller organisms

Explanation:

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What is vitreous humor? Why do forensic scientists use it?
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Answer and Explanation:

<u>What is vitreous humor? </u>

The vitreous humor is a clear, gelatin-like fluid within the eye that aids in giving it its rounded shape. It is comprised of several substances, including up to 98% water, sugars, salts, collagen and protein.

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In forensics, the is used to accurately determine a body's time of death. The fluids within the vitreous humor take longer to undergo the decay or putrefaction process. Thus, toxicology may accurately determine this based on the rising potassium levels within the vitreous humor- the levels rise in a steady, predictable pattern for certain time intervals. The potassium levels are usually used in the determination of the time of death or post-mortem interval of a corpse

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3 years ago
In some breeds of mice, yellow coat color is
Elis [28]

In the exposed lethal genes cause the individual's death during embryionic development before being born. H0m0zyg0us dominant individuals do <u>not get born</u>. Yellow: 2/3. Grey: 1/3. Phenotypic ratio: 2:1

<h3>What is complete dominance?</h3>

When the dominant allele completely masks the expression recessive allele, we talk about complete dominance.

This is the case of individuals that are heter0zyg0us for a particular gene and express the dominant trait.

The dominant allele is hiding the expression of the recessive allele.

<h3>What are the lethal genes?</h3>

Refer to genes that impede the normal development of the individual.

  • They can cause death during embryo development <u>before the individual gets born, </u>
  • They can cause the individual's death after being born and <u>before reaching </u><u>sèxual maturity</u><u>.  </u>

Let us assume that mice color is coded by a single diallelic gene that expresses complete dominance.

<u>Available data</u>:

  • Yellow color is dominant over grey color.
  • Yellow is coded by the dominant allele Y
  • Grey is coded by the recessive allele y

  • Genotype YY → Yellow and lethal
  • Genotype Yy → Yellow
  • Genotype yy → Grey

The cross would be as follows,

Cross:  Yy   x    Yy

Gametes) Y    y     Y    y

Punnett square)    Y      y

                      Y     YY    Yy

                      y      Yy     yy

F1) Considering ONLY the successfully born individuals

<u></u>

<u>Genotype</u>

2/3 = 50% of the progeny is expected to be heter0zyg0us, Yy.

1/3 = 25% of the progeny is expected to be h0m0zyg0us recessive, yy.

<u></u>

<u>Phenotype </u>

2/3 = 50% of the progeny is expected to be yellow, Yy.

1/3 = 25% of the progeny is expected to be grey, yy.

The phenotypic ratio is 2:1

You will learn more about lethal genes at

brainly.com/question/13654244

brainly.com/question/14932405

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1 year ago
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