Sunday, July 12, 2009

Biology question on DNA/chromosome inheritance?

When an animal makes a new gamete it must put only one copy of each piece of information in the gamete. The details of this process need not concern us. Instead, only a single implication is important to us. Which of the following is the most accurate statement of this single, relevant implication?





a. Each half-chromosome will evolve as a unit because the chromosomes are inherited as halves, separated at a particular structure (called a centromere).


b. The entire genome (all 25,000 genes) will evolve as a unit because each haploid genome is passed intact from parent to child, from child to grandchild and so on.


c. Each piece of design information evolves as a unit because each piece of design information is ultimately separated from its neighbors by recombination.


d. Each chromosome (each collection of 500-2000 genes) will evolve as a unit because each chromosome is passed intact to offspring

Biology question on DNA/chromosome inheritance?
d. Each chromosome (each collection of 500-2000 genes) will evolve as a unit because each chromosome is passed intact to offspring


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