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Alexandra [31]
3 years ago
14

Explain the evolutionary relationship between the fin of a fish and the flipper of a whale.

Biology
2 answers:
Luda [366]3 years ago
6 0

Answer:

The presence of fins in both species represents an adaptation to the same environment (i.e., sea), but in no way does this adaptation means close evolutionary homology between fishes and mammal cetaceans (whales)

lozanna [386]3 years ago
6 0

Answer:

Homologous structures

Explanation:

Homologous structures are parts of the skeleton of organisms are similar in structure. This gives the impression that their is a common  ancestor. Mostly the structures are not similar and the function may or may not be the same in appearance per-say such as fish fins and whale flippers.  The important part of homologous structures is that they have a skeletal similarity.

This, and the emergence of other structures is the product of evolution so each organism can have the best chance of adaptation to their environment. This ensures the survival of a species and the continuation of the next generation.

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Answer:

It will cause an Aneuplidy , an abnormal number of chromosomes that cause a fail on the chromosomes to separate at meiosis.

Explanation:

Abnormalities in chromosome number are the most obvious chromosomal disorder and are referred to as aneuploidy. It`s a condition in which one or more chromosomes are present in extra copies or are deficient in number, but not a complete set.

The loss of a single chromosome from a diploid genome is called monosomy and the gain of one chromosome is called trisomy, caused by nondisjunction, which occurs when pairs of homologous chromosomes or sister chromatids fail to separate during meiosis.

Misaligned or incomplete synapsis, can cause nondisjunction.

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I hope it helps!

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