Couples Can Select the Sex of a Child by All

question 198

Multiple Choice

Couples can select the sex of a child by all the following methods EXCEPT:

• A) inactivating X or Y sperm before conception.
• B) selecting only X eggs for fertilization.
• C) aborting XX or XY fetuses.
• D) undergoing in vitro fertilization and then inserting only male or female zygotes.

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Definitions:

Dominant Allele

An allele that expresses its phenotypic effect even when heterozygous with a recessive allele.

Recessive Allele

A variant of a gene that must be inherited from both parents in order to manifest its trait, as opposed to a dominant allele where only one copy is needed for expression.

Heterozygous Individuals

Organisms that have two different alleles for a given gene, resulting in genetic variation.