Suppose That a Trait Results from a Recessive Gene on the X

question 7

Multiple Choice

Suppose that a trait results from a recessive gene on the X chromosome.Which of the following best describes how this trait will be expressed?

• A)only in males, but may be carried by females
• B)more often in females, but also in males who are homozygous
• C)more often in males, but also in females who are homozygous
• D)only in females, but will be carried in males

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Definitions:

Sister Chromatids

Identical copies of a chromosome, connected by a centromere, that are created during DNA replication and separated during cell division.

Anaphase II

A phase of meiosis II where sister chromatids are separated and moved to opposite poles of the cell, leading to the formation of four haploid daughter cells.

Metaphase II

A phase of meiosis II where the chromosomes align at the metaphase plate, similar to metaphase in mitosis, but this process occurs in a haploid set of chromosomes.

Meiosis

Process in which a 2n cell undergoes two successive nuclear divisions (meiosis I and meiosis II), potentially producing four n nuclei; leads to the formation of gametes in animals and spores in plants.