Genetics Quiz-Punnetts and Pedigrees

In a certain species of animal, black fur (B) is dominant over tan fur (b).  If two heterozygous parents were crossed what percentage of the offspring would be Homozygous dominant?

• 0%
• 25%
• 50%
• 75%

If an organism has 2 identical alleles for a particular trait then it is

• heterozygous

• homozygous

• hybrid

Mendel’s findings about genetics apply to

• plea plants only

• plants only

• all organisms

• animals only

A pea plant that has 2 different alleles for a trait means they are

• homozygous

• heterozygous

• purebred

How many recessive alleles for a trait must an organism inherit in order to show that trait?

• 1

• 2

• 3

• 4

Tags

NGSS.HS-LS3-1

what is heredity?

• the passing of traits from parents to offspring

• the study of heredity

• the study of genetics

Tags

NGSS.HS-LS3-1

NGSS.HS-LS3-2

What is an allele?

• same forms of a gene

• different forms of a gene

• 3 letters

Tags

NGSS.HS-LS3-2

What is an example of a heterozygous genotype?

• AA

• aa

• AAaa

• Aa

The term phenotype refers to an organisms _______

• Genetic code

• Physical appearance

• Alleles

• None of these are correct

A individual who has two of the same allele is said to be

• Homozygous

• Heterozygous