Which of the Following Is True with Regard to Sources

question 69

Multiple Choice

Which of the following is true with regard to sources of variability?

• A)The chromosomes in the zygote are not exact copies of those in the mother's ovaries and the father's testes.
• B)Fraternal twins develop from a single zygote that splits into two genetically identical replicas.
• C)For each genotype,only a corresponding phenotype can be expressed.
• D)Identical twins develop from separate eggs and separate sperm.

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