In dogs, coat color is an autosomal dominant trait. The allele for a black coat is B and the allele for a brown coat is b. You crossed two heterozygous dogs. What is the probability that the first pup will have a black coat and the second will have a brown coat? O 1/8 O 3/16 O 3/4 O 1/16 In humans, males and females have the same dosage of X chromosomes. How is this possible if males have one X chromosome but females have two? O Males and females actually have a different dosage of X chromosomes. O In females, one of the X chromosomes is inactivated into a small Barr body. O In males, one of the X chromosomes is inactivated into a small Barr body. Snail shell coiling demonstrates the genetic maternal effect. A male snail that has dextral coiling (Ss) mates with a female snail with sinistral coiling (ss). Dextral coiling is dominant to sinistral coiling. The F1 generation is produced and then crossed to produce F2. What is the phenotypic ratio of the F2 generation? O 1 dextral: 3 sinistral O 1 dextral: 1 sinistral O All dextral O 3 dextral: 1 sinistral O All sinistral

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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In dogs, coat color is an autosomal dominant trait. The allele for a black coat is B and the allele for a
brown coat is b. You crossed two heterozygous dogs. What is the probability that the first pup will
have a black coat and the second will have a brown coat?
O 1/8
O 3/16
O 3/4
O 1/16
In humans, males and females have the same dosage of X chromosomes. How is this possible if
males have one X chromosome but females have two?
O Males and females actually have a different dosage of X chromosomes.
O In females, one of the X chromosomes is inactivated into a small Barr body.
O In males, one of the X chromosomes is inactivated into a small Barr body.
Snail shell coiling demonstrates the genetic maternal effect. A male snail that has dextral coiling (Ss)
mates with a female snail with sinistral coiling (ss). Dextral coiling is dominant to sinistral coiling. The
F1 generation is produced and then crossed to produce F2. What is the phenotypic ratio of the F2
generation?
O 1 dextral: 3 sinistral
O 1 dextral: 1 sinistral
O All dextral
O 3 dextral: 1 sinistral
O All sinistral
Transcribed Image Text:In dogs, coat color is an autosomal dominant trait. The allele for a black coat is B and the allele for a brown coat is b. You crossed two heterozygous dogs. What is the probability that the first pup will have a black coat and the second will have a brown coat? O 1/8 O 3/16 O 3/4 O 1/16 In humans, males and females have the same dosage of X chromosomes. How is this possible if males have one X chromosome but females have two? O Males and females actually have a different dosage of X chromosomes. O In females, one of the X chromosomes is inactivated into a small Barr body. O In males, one of the X chromosomes is inactivated into a small Barr body. Snail shell coiling demonstrates the genetic maternal effect. A male snail that has dextral coiling (Ss) mates with a female snail with sinistral coiling (ss). Dextral coiling is dominant to sinistral coiling. The F1 generation is produced and then crossed to produce F2. What is the phenotypic ratio of the F2 generation? O 1 dextral: 3 sinistral O 1 dextral: 1 sinistral O All dextral O 3 dextral: 1 sinistral O All sinistral
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