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In addition to the appearance of the antifreeze gene, icefish
have also been found to have DNA sequences similar to the
DNA sequences in hemoglobin genes of other fish species,
However, these DNA sequences are not complete and therefore
not functional in icelish. This evidence makes it likely that
KO
A. icelish ancestors
had hemoglobin
B. icefish will soon
produce offspring
with hemoglobin
C. hemoglobin is a
molecule made by
some fish that do
not have genes for it
D. Soon all fish will
stop producing
hemoglobin

Answer :

Tutorconsortium302go

This evidence makes it likely that icefish ancestors had hemoglobin.

How does icefish have partial hemoglobin genes?

  • Because icefish blood lacks hemoglobin, the oxygen-binding protein in blood, it is colorless.
  • The Channichthyid are the only animals known to be born without hemoglobin.
  • Although they do not produce hemoglobin, their genome contains remains of hemoglobin genes.
  • The function of the icefish hemoglobin gene was lost due to mutations. (Gene death occurs when a mutation or series of mutations renders a gene inactive.)
  • If this function is no longer required, the loss is unimportant.

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The correct option is A.

This evidence makes it likely that icefish ancestors had hemoglobin.

How does Icefish have partial hemoglobin genes?

  • Icefish have partial hemoglobin genes Because icefish blood lacks hemoglobin, the oxygen-binding protein in blood, it is colorless.
  • The Channichthyid are the only animals known to be born without hemoglobin.
  • Although they do not produce hemoglobin, their genome contains remains of hemoglobin genes.
  • The function of the icefish hemoglobin gene was lost due to mutations. (Gene death occurs when a mutation or series of mutations renders a gene inactive.)
  • If this function is no longer required, the loss is unimportant.

Why do icefish have no hemoglobin?

  • Because icefish don't have red blood cells, they must absorb oxygen from the water through their skin.

learn more about Icefish here:

brainly.com/question/10924650

#SPJ2

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