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WorksheetsPractice: Dihybrid Crosses
Total questions: 10
Worksheet time: 21mins
A male beetle has the genotype Ttbb. If this beetle mates with a female with genotype TTBb, what is the chance their offspring will have the genotype TtBb? [Type the answer in fraction]
(a)
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What is the probability for an offspring to have Round and Yellow seeds? [Answer in fraction]
(a)
A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.
This cross would be
BBEE x bbee
BBEe x BbEe
BbEE x BbEe
BBee x BBEE
In certain camels, one hump (H) is dominant over two humps (h) while long necks (N) are dominant over short necks (n). Cross a camel that is heterozygous for both traits with a camel that is homozygous recessive for hump & heterozygous for the neck.
What is the probability for an offspring to be homozygous recessive for both traits? [Answer in fraction]
(a)
A male alligator has the genotype RrAa. If this alligator mates with a female with genotype RrAa, what is the chance their offspring will have the genotype rrAa? [Type the answer in fraction]
(a)
Cross Two Homozygous plants
(RrYy x rrYy)
R = round seeds, r = wrinkled seeds Y = yellow seeds, y = green seeds
What is the probability for an offspring to have Wrinkled and Green seeds? [Answer in fraction]
(a)
