Why Would Icefish Lose Their Alpha and Beta Globin Genes

question 23

Multiple Choice

Why would icefish 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 absorbed too much heat from sunlight filtering through the ice.
• 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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Sexual interactions between individuals of the opposite sex.

Leading Source

The most important or prominent origin or provider of information or materials in a particular context.

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An infectious disease triggered by the human immunodeficiency virus that targets the immune system, potentially resulting in acquired immunodeficiency syndrome (AIDS).