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o-na [289]
3 years ago
9

How are vestigial structures an example of evidence of evolution?

Biology
1 answer:
lutik1710 [3]3 years ago
4 0
They provide evidence of genes coding for structures that are present not because they are useful, but because they were once useful to an ancestor. 

<span>One example is the plantaris muscle. This is a long, thin muscle in the human foot and calf that serves no significanl purpose in humans ... in fact, it is regularly removed by doctors harvesting muscle tissue to use in reconstructive heart surgery, because its removal leaves no loss of function in walking or balance. </span>

<span>However this same muscle is found more fully developed in the feet and calves of other primates. It is the muscle used for grasping with the feet.</span>
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the answer to this problem is c

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2 years ago
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Species that require pristine conditions for survival and reproduction are useful as a(n)
hodyreva [135]

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The correct answer is - warning system.

Explanation:

Warning systems are a type of system that could be technical or biological in nature that can help in assessing or inform about the possible danger or change in a particular setting such as ecosystem, weather, water quality, and many others. It helps in avoiding such threats before occurring or become serious threats.

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2 years ago
Which best describes the nucleus of an atom?
Maru [420]

Answer;

C. it is the part f the atom with the greatest mass

Explanation;

The nucleus of an atom is a small dense region at the center of an atom that contains protons and neutrons.

Almost all the mass of an atom is located in the nucleus, with a very small contribution from the electron shells.

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4 0
3 years ago
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the allele for white fur is revessive and the allele for normal fur is dominant the frequency for the normal fur allele is 0.60.
Mariulka [41]

Answer:

36% of wolves have normal fur.

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Given , the allele for white fur is recessive and the allele for normal fur is dominant

Let "N" represents the allele for normal fur and "n" represents the fur for white fur.

As per Hardy Weinberg's principle, the frequency for dominant allele is represented by "p"

Given ,

p = 0.60\\

Then frequency for dominant genotype will be "p^2"

So, Frequency for wolves with normal fur is

p^{2} \\0.60^2\\0.36

Percentage of the wolves with normal fur is

0.36*100\\= 36%

 

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3 years ago
If a specific variant of a character was passed down to its offspring, which of the fallowing is the offspring inheriting
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