How can a genetic mutation lead to an adaptation in a species
1 answer:
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I found the attached image on the internet related to this question.
The solid arrows represent neuronal communication. The stimulus, the effects, and the flow of information is all done by receptors and synapses that send a signals across the body in order to have effective feedback responses promoting the homeostasis of the organism.
The solid arrows represent neuronal communication. The stimulus, the effects, and the flow of information is all done by receptors and synapses that send a signals across the body in order to have effective feedback responses promoting the homeostasis of the organism.
Solution :
Red is dominant over the white leaves and pointed is dominant over smooth.
Red = R , white = r
Pointed = P , smooth = p
Red, pointed x white,smooth ------ Parents
RRPP rrpp
RP rp ----------------- Gametes
RrPp --------
(red, pointed)
When this is test crossed,
RrPp x rrpp ---- test cross
Gametes → rp
RP ---------- RrPp - red, pointed - 36 parental type
Rp ---------- Rprp - red, smooth - 14 re- combination
rP ----------- rrPp - white pointed - 10 re- combination
rp ----------- rrpp - white, smooth - 40 - parental type
Total = 100
As this ratio is deviating from 1:1:1:1, it indicated the two genes are linked.
Linkage strength = percentage of crossing over = map distance between the genes.
Percentage crossing = recombination frequency = percentage of recombination.
Recombination frequency
= 24 %
= 24 map units