Genetics Quiz

What did Gregor Mendel study between 1856 and 1863?

• Fruit flies

• Rose bushes

• Pea plants

• Tomato plants

What did Mendel find when he crossed two purebred traits of green and yellow colored peas?

• 75% green and 25% yellow peas

• 50% green and 50% yellow peas

• All peas were yellow

• All peas were green

What did Mendel call the factors that we now refer to as genes?

• Genetic variations

• Alleles

• DNA sections

• Chromosomes

What is the term for a gene that masks the effect of another gene?

• Homozygous gene

• Recessive gene

• Dominant gene

• Genetic variation

What is the term for a gene that is written with a capital letter?

• Genetic variation

• Recessive gene

• Heterozygous gene

• Dominant gene

In pea pods, which color is dominant over the other?

• Yellow over green

• Neither color is dominant

• Green over yellow

• Both colors are equally dominant

What is the genotype for a man who is homozygous for tallness?

• Tall

• tt

• Tt

• TT

What is the genotype for a woman who is heterozygous for tallness?

• tt

• Tt

• TT

• Tall

What is the term for a gene that has different alleles?

• Homozygous gene

• Dominant gene

• Recessive gene

• Heterozygous gene

What does the term 'heterozygous' mean?

• Two dominant alleles

• Two recessive alleles

• Different alleles

• Same alleles