If a person is heterozygous for the δ32 allele of the ccr5 gene, how many of the four daughter cells produced by meiosis will have the δ32 allele? 1 2 4 varies

the answer would be 2, if crossing over doesn’t occur 2 out of 4 of the daughter cells will have that allele.

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what is a measurement of the earth’s history divided into time periods?

> fossil record <

sedimentary rock

> geologic time scale <

radioactive elements