A new variety of fast plant was identified that expressed purple leaves and red hairs. A true-breeding strain of this plant was crossed with a true-breeding green leaf and hairless strain, and all of the progeny were green-leafed and hairless.
Added by Brian S.
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The purple-leaved, red-haired plant is likely homozygous for the traits (PPRR), while the green-leaved, hairless plant is also likely homozygous for its traits (pprr). Show more…
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A new variety of fast plant was identified that expressed purple leaves and red hairs. A true-breeding strain of this plant was crossed with a true-breeding green leaf and hairless strain, and all of the progeny were green-leafed and hairless. One of these F1 strains was backcrossed with the hairy purple parental (you might need to make a Punnett square to figure out your expected ratio), and the following progeny of the cross were observed: 402 green/hairless, 396 purple/hairy, 116 green/hairy, and 125 purple/hairless. a. How many genes are involved in these two characters? b. State the nature of the alleles (dominant/recessive) and if they assort independently or not (using the chi-square statistic to support your answer - show your work!) Hint: you'll probably need to set up a Punnett square at some point.
Sri K.
Subject: BIO161 A new variety of fast plant was identified that expressed purple leaves and red curly hairs. A true-breeding strain of this plant was crossed with a true-breeding green leaf and hairless strain, and all of the progeny were green-leafed and hairless. One of these F1 strains was backcrossed with a hairy purple parent, and the following progeny of the cross were observed: 402 green/hairless, 396 purple/hairy, 116 green/hairy, and 125 purple/hairless. How many genes are involved in these two characters? State the nature of the alleles (dominant/recessive) and if they assort independently or not (using the chi-square statistic to support your answer). HINT: Set up a Punnett square.
Katlin K.
A snapdragon plant with violet flowers was crossed with another snapdragon plant with white flowers. The F1 progeny obtained had pink flowers. Explain in brief the inheritance pattern seen in the offspring of the F1 generation.
Adi S.
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