# 1 b) An allele for coat color in mice, Y, produces a yellow coat color when present. The phenotypes of the F1 generation are shown. A cross between a Non-yellow mouse and yellow mouse produces half yellow and half non-yellow progeny (offsprings). Non-yellow happens to be white in this example, but it does not need to be; it can be black, grey, or some other mouse color. How does the F1 generation ratio differ from the expected mendelian ratios for a heterozygous, hybrid cross? *

Human Anatomy & Physiology (11th Edition)
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Chapter1: The Human Body: An Orientation
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#1b) An allele for coat color in mice, Y, produces a yellow coat color when
present. The phenotypes of the F1 generation are shown. A cross between a
Non-yellow mouse and yellow mouse produces half yellow and half non-yellow
progeny (offsprings). Non-yellow happens to be white in this example, but it
does not need to be; it can be black, grey, or some other mouse color. How does
the F1 generation ratio differ from the expected mendelian ratios for a
heterozygous, hybrid cross? *
Yellow
Non-yellow
Pgeneration
Yellow
Yellow
Meiosis
Gametes
1/2
1/2
Fertilization
Yellow
Non-yellow
F generation
Non vellow
Yellow
Yellow
Dead
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Transcribed Image Text:#1b) An allele for coat color in mice, Y, produces a yellow coat color when present. The phenotypes of the F1 generation are shown. A cross between a Non-yellow mouse and yellow mouse produces half yellow and half non-yellow progeny (offsprings). Non-yellow happens to be white in this example, but it does not need to be; it can be black, grey, or some other mouse color. How does the F1 generation ratio differ from the expected mendelian ratios for a heterozygous, hybrid cross? * Yellow Non-yellow Pgeneration Yellow Yellow Meiosis Gametes 1/2 1/2 Fertilization Yellow Non-yellow F generation Non vellow Yellow Yellow Dead Support | Schoology Blog | PRIVACY POLICY | Terms of Use
Expert Solution
Step 1
  • The Y allele is the dominant allele and it produces yellow coat colour to the mice.
  • If a mouse is yellow colour then it can be heterogeneous genotype (Yy) or homogenous genotype (YY).
  • But if a mouse has a non yellow coat then it must have two recessive alleles(yy).
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