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Alisiya [41]
3 years ago
7

Some blind cave salamander have eye how might this be evidence that cave salamander evolved from sighted ancestors

Biology
2 answers:
Kaylis [27]3 years ago
8 0

If cave salamander didn’t evolve from sighted ancestors, it eyes would be a vestigial structure.

Cave salamanders live in the zone, with complete lack of light (dark zone), so this organisms adapted to that environment with blindness. It is believed that cave salamanders evolved from the ones that could see. The explanation of why they lost their sight is that they conserved energy needed to maintain sight to be more successful in reproduction.

artcher [175]3 years ago
3 0

Answer:

Eyes would be a vestigial structure.

Explanation:

A vestigial structure as a stunted organ that has little or no function in a particular organism. An example of this can be seen in the question above which states that some blind salamdras have eyes. These eyes have no use for these salamanders, so we can say that the eyes of the salamander is a vestigial structure.

According to the theory of evolution, organisms have undergone and undergo changes over time, with new species emerging from some common ancestor. Studying different groups of organisms, we realize several characteristics that serve as evidence for this theory. The presence of trace structures is one such evidence.

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3 years ago
Assuming the population begins in H−W equilibrium, what is C1 allele frequency after one generation of natural selection? Expres
DIA [1.3K]

Complete question:

In a population of flowers growing in a meadow, C1 and C2 are autosomal codominant alleles that control flower color. The alleles are polymorphic in the population, with f (C1) = 0.7 and f (C2) = 0.3. Flowers that are C1C1 are yellow, orange flowers are C1C2, and C2C2 flowers are red. A storm blows a new species of hungry insects into the meadow, and they begin to eat yellow and orange flowers but not red flowers. The predation exerts strong natural selection on the flower population, resulting in relative fitness values of C1C1 = 0.30, C1C2 = 0.60, and C2C2 = 1.0. Assuming the population begins in H−W equilibrium, what is C1 allele frequency after one generation of natural selection? Express your answer using three decimal places.

Answer:      

The C1 allele frequency after one generation of natural selection equals 0.559

Explanation:

Due to technical problems, you will find the complete answer and explanation in the attached file.    

Download pdf
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3 years ago
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Explanation:

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