B11 Inheritance Unit Test (Core)

What term is used to describe a version of a gene?

• allele

• genotype

• phenotype

• heterozygous

What term is used to describe an organism that carries two identical alleles for a gene?

• dominant

• recessive

• homozygous

• heterozygous

What term is used to describe the observable features of an organism due to its genotype?

• inheritance

• phenotype

• dominant

• allele

A person has the genotype Aa.

What is the correct description of this genotype?

• heterozygous, with two different alleles of the same gene

• heterozygous, with two different genes of the same allele

• homozygous, with two different alleles of the same gene

• homozygous, with two different genes of the same allele

In a certain plant, the allele fo white fruit (W) is dominant over the allele for yellow fruit (w).

A white-fruited plant was crossed with a yellow-fruited plant.

About half of the offspring were white-fruited and the other half were yellow-fruited.

Which genotypes did the parent plants have?

• ww and www

• Ww and ww

• WW and ww

• WW and Ww

Cystic fibrosis is a lung disease caused by a recessive allele, c.

Two healthy parents produce a child with cystic fibrosis.

Which of the following statements must be true?

• One parent must be homozygous and the other must be heterozygous

• Both parents must be homozygous

• One parent must be homozygous and the other must be heterozygous

• Both parents must be heterozygous

A gene is...

• A heritable factor that controls a specific characteristic

• An allele

• A length of DNA which occupies a specific position on the chromosome

What is an acquired trait?

• a characteristic that a living thing is born with

• a characteristic that a living thing gets during its lifetime

• physical appearance

• heredity

earlobe attachment

• Inherited trait

• Acquired trait

Gold contact lenses

• Inherited Traits

• Acquired Traits