If an Individual Is Heterozygous for a Trait, He Has

question 137

Multiple Choice

If an individual is heterozygous for a trait, he has inherited:

• A)two of the same allele for that trait.
• B)two different alleles for that trait.
• C)two dominant alleles for that trait.
• D)two recessive alleles for that trait.

---

Definitions:

Calcium Carbonate

A chemical compound with the formula CaCO3, commonly found in rocks as the minerals calcite and aragonite and is the main component of pearls and the shells of marine organisms.

Clay

1. Any fine-grained sedimentary particle that is finer than 1/256 mm. 2. A family of finely crystalline, hydrous-silicate minerals with a two- or three-layered crystal structure.

Calcium Carbonate

A chemical compound found in rocks as the minerals calcite and aragonite, and is the primary component of shells of marine organisms, snails, and eggs.

O-Horizon

The uppermost layer of soil, primarily composed of organic matter, including decomposed leaves, twigs, and other plant material.