The Color of a Flower Is Controlled by Two Alternative

question 68

Multiple Choice

The color of a flower is controlled by two alternative alleles at a single locus,R (red) and r (white) .If an individual has the Rr alleles,it is considered to be

• A)homozygous dominant with a red color.
• B)heterozygous with a red color.
• C)heterozygous with a white color.
• D)homozygous recessive with a white color.

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Definitions:

BRCA1

A gene associated with a higher risk of breast and ovarian cancer when mutated; it plays a crucial role in DNA repair.

Neutrally Evolving Allele

An allele that changes in frequency within a population without being under the influence of natural selection, due to random genetic drift.

Coalescent Events

Points in time where two or more genetic lineages have a common ancestor, used in models predicting the genetic structure of populations over time.

Population Size

The number of individuals within a specific species living in a particular geographic area.