Genetics test review

This image shows a...

• Punnett Square
• Phenotype
• Genotype
• Dominant allele

What is the probability of the offspring having a Rr genotype?

• 100%

• 75%

• 50%

• 25%

If T is dominant for tall, what is the probability that the offspring will be tall?

• 100%

• 75%

• 50%

• 25%

Gregor Mendel's principles of genetics apply to

• plants only.

• animals only.

• pea plants only.

• all organisms.

Organisms that have two identical alleles for a particular trait are said to be

• hybrid

• homozygous

• heterozygous

• dominant

If a pea plant's alleles for height are tt, what is true of its parents?

• Both parents were tall.

• Both parents were short.

• Both parents contributed a recessive allele.

• Both parents contributed a dominant allele.

What you see, or the physical appearance.

• Genotype
• Phenotype
• Homozygous
• Heterozygous

Who is considered the founder of the scientific study of genetics

• Louis Pasteur

• Isaac Newton

• Marie Curie

• Gregor Mendel

In our Tt example, capital T means ___, and little t means ___

• recessive, dominant

• dominant, recessive

• homozygous, heterozygous

• good, bad

The combination Tt represents a ___ genotype

• homozygous dominant

• homozygous recessive

• heterozygous dominant

• purebred dominant