SS Genetics

In pea plants, the gene for tallness (T) is dominant over the gene for shortness (t). If 100% of the F1 generation off spring are heterozygous tall, what were the most probable genotypes of the parent plants?

• TT x TT

• TT x tt

• Tt x tt

• Tt x Tt

Who is considered the "father of genetics"?

• Albert Einstein

• Louis Pasteur

• Mickey Mouse

• Gregor Mendel

The definition "when two genes for the same trait unlike" (for example hair color, a gene for brown and a gene for black) best describes the term

• phenotype

• heterozygous

• homozygous

• genotype

In given family there are seven children; two have blood type AB, two have type A, two have type B, and one has type O blood. The probable genotypes of the parents are which of the following

• AA + BB

• AO + BO

• AO + OO

• BO + OO

The physical appearance of an individual is it's

• genotype

• heredity

• genetics

• phenotype

In guinea pigs, black B dominant over brown (b) and short hair (S) is dominant over long hair (s). What would be the expected result of a cross between a homozygous black, homozygous short hair and a homozygous brown, homozygous short hair guinea pig.

• 9/16 black short, 3/16 black long, 3/16 brown short, brown long

• 3/4 black short, 1/4 brown long

• All brown long

• All black short

In pea plants, round seeds (R) are dominant over wrinkled seeds (r). If a homozygous round seeded plant was crossed with a homozygous wrinkled seeded one; what would be the expected results?

• F1 generation- all wrinkled

• F1 generation- 1/2 round, 1/2 wrinkled

• F1 generation - all round

In horses, red is dominant over white, and long tails are dominant over short tails. A heterozygous red, heterozygous long-tailed horse is crossed with a white, heterozygous long-tailed horse. The phenotype ratio of the offspring will be which of the following?

• 6 red long, 2 red short, 6 white long, 2 white short

• 3 red long, 1 white short

• 9 red long, 3 red short, 3 white long, 1 white short

• 7 red long, 4 red short, 4 white long, 1 white short

Yellow wings are dominant over blue wings, and Long antennae are dominant over short antennae in a certain kind of wasp. When a heterozygous yellow, heterozygous long-antennae wasp is crossed with a heterozygous yellow and heterozygous long-antennaed; the phenotype ratio of the offspring should be

• 9 yellow long, 3 yellow short, 3 blue long, 1 blue short

• 1 yellow long, 1 yellow short, 1 blue long, 1 blue short

• 1 yellow long, 3 yellow short, 1 blue long, 1 blue short

• 3 yellow long, 3 yellow short, 1 blue long, 1 blue short

In ducks, green (G) bills are dominant over yellow (g) bills, If a homozygous green duck is crossed with a yellow, what will be the expected genotype ratio off the offspring?

• all Gg

• 1/4 Gg, 1/2 GG, 1/4 gg

• 3/4 Gg, 1/4 gg

• 1/2 Gg, 1/2 gg