In guinea pigs, black coats (B) are dominant to brown coats (b). A female guinea pig that is homozygous recessive for coat color mates with a male guinea pig that is heterozygous for coat color. What percentage of their offspring will have black coats? a. 0%   b. 25%   c. 50%   d. 75%   e. 100%

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In guinea pigs, black coats (B) are dominant to brown coats (b). A female guinea pig that is homozygous recessive for coat color mates with a male guinea pig that is heterozygous for coat color. What percentage of their offspring will have black coats?

a.

0%

  b.

25%

  c.

50%

  d.

75%

  e.

100%

In guinea pigs, black coats (B) are dominant to brown coats (b). A female guinea pig that is homozygous recessive for coat color mates with a male guinea pig that is heterozygous for coat color. What would be the genotypic ratio of the F1generation?

a.

3BB: 1bb

  b.

1BB: 2Bb: 1bb

  c.

2BB: 1Bb: 1bb

  d.

2BB: 2Bb

  e.

2Bb: 2bb

If two guinea pigs in the F1 generation described in the question above mated, at random, what would be the likelihood that they would produce an offspring with a black coat?

a.

0%

  b.

25%

  c.

50%

  d.

75%

  e.

It is impossible to tell given the information provided

Certain genes, such as the non-structural genes that produce rRNA, are unregulated and have essentially constant levels of gene expression (i.e., they are always "on"). These genes are described as being ___________________________.

a.

Inducible

  b.

Constitutive

  c.

Elongated

  d.

Repressible

  e.

Spontaneous

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