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What gives rise to different variations of traits within a species? a. Different alleles of a gene b. Varying distances...

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Biology

What gives rise to different variations of traits within aspecies?

a.

Different alleles of a gene

b.

Varying distances between genes

c.

Natural selection

D. None of the above

2.) Crossing true breeding dark-coated sheep with true breedinglight-coated sheep always results in 100% dark-coated offspring.You are screening a population of 300 Soay sheep for coat color,and you count 224 dark sheep and 76 light sheep. What is thegenotype frequency of the homozygous recessive sheep forTYRP1 gene if the population is in Hardy-Weinbergequilibrium?

a.

0.747

b.

0.253

c.

0.864

d.

0.503

3.) In the same population, if it is under Hardy-Weinbergequilibrium, how many individuals do you expect to be heterozygousat TYRP1?

a.

150

b.

0.500

c.

261

d.

75

4.) Rabbit’s ears can be either short (dominant) or floppy(recessive). If a population of rabbits in Hardy-Weinbergequilibrium has 250 short eared rabbits and 100 floppy earedrabbits, what is the allele frequency of the “short” allele?

a.

0.714

b.

0.465

c.

0.845

d.

0.535

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