. In the tiny model plant Arabidopsis, the recessive allele hyg confers seed resistance to the drug hygromycin, and her, a recessive allele of a different gene, confers seed resistance to herbicide. A plant that was homozygous hyg/hyg ⋅ her/her was crossed with wild type, and the F1 was selfed. Seeds resulting from the F1 self were placed on petri dishes containing hygromycin and herbicide.a. If the two genes are unlinked, what percentage of seeds are expected to grow?b. In fact, 13 percent of the seeds grew. Does this percentage support the hypothesis of no linkage? Explain. If not, calculate the number of map units between the loci.c. Under your hypothesis, if the F1 is testcrossed, what proportion of seeds will grow on the medium containing hygromycin and herbicide?

Human Anatomy & Physiology (11th Edition)
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ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
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Chapter1: The Human Body: An Orientation
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. In the tiny model plant Arabidopsis, the recessive allele
hyg confers seed resistance to the drug hygromycin, and
her, a recessive allele of a different gene, confers seed
resistance to herbicide. A plant that was homozygous
hyg/hyg ⋅ her/her was crossed with wild type, and the F1
was selfed. Seeds resulting from the F1 self were placed
on petri dishes containing hygromycin and herbicide.
a. If the two genes are unlinked, what percentage of
seeds are expected to grow?
b. In fact, 13 percent of the seeds grew. Does this percentage support the hypothesis of no linkage? Explain.
If not, calculate the number of map units between the
loci.
c. Under your hypothesis, if the F1 is testcrossed, what
proportion of seeds will grow on the medium containing
hygromycin and herbicide?

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