1. Are any results of the first three crosses inconsistent with epistasis between two genes? If so, name the cross and describe the inconsistency. 2. Do any of the six crosses disagree with the properties of a single-gene trait and incomplete dominance? If so, name the cross and describe the inconsistency. 3. Assuming the color of flowers is determined by one gene, define symbols for its alleles and describe their dominance properties.

Human Anatomy & Physiology (11th Edition)
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A plant species produces flowers that are either dark purple, red, or lavender in color. Twelve individuals of unknown
parentage were used for crosses, and yielded the following results:
cross
parents
offspring
A
purple x purple
3/4 purple, 1/4 red
В
red x red
3/4 red, 1/4 lavender
C
lavender x lavender
all lavender
D
purple x lavender
all purple
E
purple x red
1/2 purple, 1/4 red, 1/4 lavender
F
red x lavender
1/2 red, 1/2 lavender
1. Are any results of the first three crosses inconsistent with epistasis between two genes? If so, name the cross and
describe the inconsistency.
2. Do any of the six crosses disagree with the properties of a single-gene trait and incomplete dominance? If so, name
the cross and describe the inconsistency.
3. Assuming the color of flowers is determined by one gene, define symbols for its alleles and describe their
dominance properties.
Transcribed Image Text:A plant species produces flowers that are either dark purple, red, or lavender in color. Twelve individuals of unknown parentage were used for crosses, and yielded the following results: cross parents offspring A purple x purple 3/4 purple, 1/4 red В red x red 3/4 red, 1/4 lavender C lavender x lavender all lavender D purple x lavender all purple E purple x red 1/2 purple, 1/4 red, 1/4 lavender F red x lavender 1/2 red, 1/2 lavender 1. Are any results of the first three crosses inconsistent with epistasis between two genes? If so, name the cross and describe the inconsistency. 2. Do any of the six crosses disagree with the properties of a single-gene trait and incomplete dominance? If so, name the cross and describe the inconsistency. 3. Assuming the color of flowers is determined by one gene, define symbols for its alleles and describe their dominance properties.
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