7.3 Monohybrid Punnett Squares 2023

Front

In flies, red eyes (R) are dominant to brown eyes (r). A heterozygote fly is crossed with a homozygous recessive fly. What percentage of offspring will have brown eyes?

Back

50%

Front

In flies, red eyes (R) are dominant to brown eyes (r). A heterozygote fly is crossed with a homozygous recessive fly. What fraction of offspring will be heterozygotes?

Back

1/2

Front

In a plant species, long stems (L) are dominant to short stems (l). A heterozygous plant is crossed with a homozygous dominant plant. What percentage of offspring will have short stems?

Back

0%

Front

In a plant species, long stems (L) are dominant to short stems (l). A heterozygous plant is crossed with a homozygous dominant plant. What will be the ratio of genotypes in the offspring?

Back

1:1

Front

In a species of mammals, gray fur (G) is dominant to white fur (g). Two heterozygous mammals are mated together and produce offspring. What fraction of offspring will have gray fur?

Back

3/4

Front

In a species of mammals, gray fur (G) is dominant to white fur (g). Two heterozygous mammals are mated together and produce offspring. What percentage of the offspring will have white fur?

Back

25%

Front

A heterozygous tall plant (Tt) is crossed with a short plant (tt). What will be the ratio of tall plants to short plants?

Back

1:1

Front

A heterozygous plant (Tt) is crossed with a short plant (tt). What fraction of offspring will be homozygous recessive?

Back

1/2

Front

In a certain animal, brown eyes are dominant and blue eyes are recessive. A heterozygote is mated with a blue-eyed animal. What fraction of offspring will have blue eyes?

Back

1/2

Front

In a certain animal, brown eyes are dominant and blue eyes are recessive. A heterozygote is mated with a blue eyed animal. What percentage of the offspring will be heterozygotes?

Back

50%