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almond37 [142]
3 years ago
11

Explain the difference between homology and analogy using a wolf, a whale, and a shark:

Biology
1 answer:
allochka39001 [22]3 years ago
5 0

Answer:

Explanation:

Analogy refers to traits or structures like body shapes, fins which evolved independently that are similar in organisms that are not related by the same common ancestor. For example dolphins and shark have similar body structures like fins but they are unrelated. Whale and shark too. Whales are mammals, sharks are fish.

Homology refers to traits or structures

posses by organisms that are related by common ancestors. Example wolf and whales.....they are both mammals.

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2. In a certain fish, blue scales (BB) and red scales (bb) are codominant. When a fish has the
Sveta_85 [38]

Answer:

a) BB

b) bb

c) Bb

Explanation:

Co-dominance is a type of non-mendelian genetic inheritance in which two alleles of a gene are neither dominant nor recessive over one another, hence, they form an hybrid offspring that simultaneously exhibits the traits encoded by both alleles. This is the case of the scale color gene in a certain fish. The allele for blue scales (B) and allele for red scales are codominant. Hence, they produce an hybrid with a patchwork of both blue and red colours.

Therefore, a fish with blue scale color will possess an homozygous genotype of the blue allele: BB while a fish with a red scale color will possess an homozygous genotype of the red allele: bb. Since the patchwork fish is an hybrid or heterozygous, it will contain a combination of the blue and red alleles i.e. Bb.

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3 years ago
Read 2 more answers
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