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Flies can have red eyes, which is Dominant and white eyes, which is Recessive. Which parental cross will give us 75% red-eyed flies and 25% white eyed flies.
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
B=Brown Eyes; b=blue eyes Mom's genotype is Bb and dad's genotype is BB. What are the possible genotypes for the offspring?
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
Black hair is dominant to brown hair. A woman with brown hair marries a man with brown hair. What are the possible phenotypes for their kids?
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
Freckles are recessive. No freckles are dominant. Mom= heterozygous Dad=homozygous recessive Possible genotypes for the kids?
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
Attached earlobes (A) are dominant over free hanging earlobes (a). Mom = AA and Dad = aa. What is the probability that the child will have attached earlobes?
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
Curly hair is recessive, and straight hair is dominant. A woman with curly hair marries a man who is homozygous dominant for straight hair. What are the possible genotypes of their babies?
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
Which of the following have the same phenotype but different genotypes? B=brown, b=blue eyes
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
Curly hair is recessive, and straight hair is dominant. A woman with curly hair marries a man who is homozygous dominant for straight hair. What are the possible phenotypes for the children?
Straight hair
Ss only
Brown hair
100%
Heterozygous and homozygous recessive
Heterozygous brown eyes and homozygous brown eyes
Rr and Rr
BB and Bb
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