Guppy tails come in different colors and shapes. Tail shape is forked or smooth: forked tails are recessive (f-) and smooth is wild-type (f+). Tail color is yellow or red: yellow is recessive (r-) and red is wild-type (r+). These two genes are on Chromosome 3, located 12 cm apart. A smooth red-tailed female that is heterozygous at both loci and a forked yellow-tailed male have 200 offspring. The cross is shown below: f+ r- f- r+ 88 X 176 f- f- r- How many forked tailed, yellow fish do you expect to find among the offspring? O 12 O 24 r- Incorrect Genotype f-r- from the mother requires recombination; this number would be correct for a gamete produced without recombination.

Human Anatomy & Physiology (11th Edition)
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Guppy tails come in different colors and shapes. Tail shape is forked or smooth: forked tails are recessive (f-) and smooth is wild-type (f+). Tail color is yellow or red: yellow is recessive (r-) and red is wild-type (r+). These two genes are on Chromosome 3, located 12 cm apart. A smooth red-tailed female that is
heterozygous at both loci and a forked yellow-tailed male have 200 offspring. The cross is shown below:
f+
f-
O 12
O24
r-
O 88
O 176
r+
How many forked tailed, yellow fish do you expect to find among the offspring?
f-
f-
r-
Incorrect
Genotype f-r- from the mother requires recombination; this number would be correct for a gamete produced without recombination.
X
X
Transcribed Image Text:Guppy tails come in different colors and shapes. Tail shape is forked or smooth: forked tails are recessive (f-) and smooth is wild-type (f+). Tail color is yellow or red: yellow is recessive (r-) and red is wild-type (r+). These two genes are on Chromosome 3, located 12 cm apart. A smooth red-tailed female that is heterozygous at both loci and a forked yellow-tailed male have 200 offspring. The cross is shown below: f+ f- O 12 O24 r- O 88 O 176 r+ How many forked tailed, yellow fish do you expect to find among the offspring? f- f- r- Incorrect Genotype f-r- from the mother requires recombination; this number would be correct for a gamete produced without recombination. X X
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