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Dihyrbrid Crosses

By Katelyn Owens
Last updated 8 months ago
32 Questions
Note from the author:
dihybridc crosses

What is the genotype for blue body color and homozygous recessive oval eyes?

What is the genotype for round eyes and homozygous recessive stubby nose?

What is the genotype for purple body and heterozygous for long nose?

Blue body color (B) is dominant to purple body color (b). Round eyes (R) is dominant to oval eyes (r). How many offspring in the cross will be blue with round eyes (B_R_).

Blue body color (B) is dominant to purple body color (b). Round eyes (R) is dominant to oval eyes (r). How many offspring in the cross will be blue with oval eyes (Bbrr or BBrr)?

Blue body color (B) is dominant to purple body color (b). Round eyes (R) is dominant to oval eyes (r). How many offspring in the cross will be purple with round eyes (bbRR or bbRr)?

Blue body color (B) is dominant to purple body color (b). Round eyes (R) is dominant to oval eyes (r). How many offspring in the cross will be purple with oval eyes (bbrr)?

What is the phenotypic rato?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the phenotype of BbLl?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the phenotype of bbLl?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the phenotype of Bbll?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the phenotype of bbll?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the probability that the baby will have blue eyes with a stubby nose?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the probability that the baby will be purple eyes with a stubby nose?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the probability that the baby will be blue eyes with a long nose?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the probability that the baby will be blue eyes with a stubby nose?

Long nose (L) is dominant to stubby nose (l). Blue eyes (B) are dominant to purple eyes (b). What is the probability that the baby will have purple eyes?

Use the chart below to identify the phenotype of a snail with the genotype WwPpbb

Use the chart to determine the genotype of a snail that is recessive for shell color, heterozygous for skin color, and homozygous dominant for eyes.

Draw the cross between a snail that is heterozygous for white shell and a snail with a black shell.

Look at #20 What percent of the offspring will have a white shell?

Draw the cross between two snails that are heterozygous for pink skin.

Look at #22, What is the phenotypic ratio.

What is the phenotype of a fruit that is RrFf?

Considering only fruit color, how many of the offspring will be red?

Considering only shape color, how many of the offspring will be round?

How many of the offspring will be yellow and round?

How many of the offspring will be yellow and pear shaped?

L= long stem, l= short stem
Y= yellow seed, y= green seed

Look at the dihybrid cross what is the phenotype of LlYy?

L= long stem, l= short stem
Y= yellow seed, y= green seed

Look at the dihybrid cross what is the phenotype of LlYY?

L= long stem, l= short stem
Y= yellow seed, y= green seed

How many of the offspring will be short stemed with yellow seeds?

L= long stem, l= short stem
Y= yellow seed, y= green seed

How many of the offspring will be long stemed with yellow seeds (L_Y_)?