In Polygenic Inheritance

question 13

Multiple Choice

In polygenic inheritance,

• A) phenotypic characteristics are always controlled by genes on a single chromosome.
• B) phenotypic characteristics are determined by interactions among several genes.
• C) phenotypic characteristics are determined by the genes on the Y chromosome.
• D) phenotypic characteristics are determined by a single pair of alleles.
• E) phenotypic characteristics are determined by the action of a single gene.

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Definitions:

Chromosomes

Chromosomes are long strands of DNA, wrapped around protein, that carry hereditary information for traits and characteristics.

Sister Chromatids

Identical copies of a chromosome, connected by a centromere, that are produced during DNA replication.

Anaphase II

A stage of meiosis II where the sister chromatids are separated and pulled towards opposite poles of the cell.

Luteinizing Hormone

Luteinizing Hormone is a hormone produced by the anterior pituitary gland that triggers ovulation in females and stimulates the production of testosterone in males.