Why Would Ice Fish Lose Their Alpha and Beta Globin

question 14

Multiple Choice

Why would ice fish lose their alpha and beta globin genes through mutation?

• A)If hemoglobin was not necessary there was no selective pressure to keep mutations from accumulating
• B)The fish wanted to stop producing red blood cells, so they mutated the globin genes
• C)Fish with red blood cells were more visible to predators and were eaten
• D)Mistakes in DNA replication are more likely to occur at colder temperatures
• E)Fish living in the cold cannot obtain enough iron to make hemoglobin

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