A Person Who Is Homozygous Recessive at a Locus Has

question 44

Multiple Choice

A person who is homozygous recessive at a locus has which of the following?

• A) two copies of the recessive allele
• B) two copies of the dominant allele
• C) an autosomal trisomy
• D) a recessive allele on the X chromosome only
• E) a recessive allele on the Y chromosome only

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Definitions:

Major Resonance Structures

The resonance structures that contribute more significantly to the hybrid of a molecule due to their lower energy and higher stability.

Sigma Complex

An intermediate stage in certain chemical reactions characterized by a complex in which the central metal atom is bonded to ligands through sigma bonds.

HNO3

Nitric acid, a highly corrosive and toxic strong mineral acid used in the production of fertilizers, explosives, and in the pickling of metals.

P-nitroanisole

An organic compound consisting of an anisole group where a nitro group is attached to the para position of the anisole ring.