Ross is interested in an isolated population of 100 rabbits. He observed that 36 rabbits have...

Ross is interested in an isolated population of 100 rabbits. He observed that 36 rabbits have short ears; a recessive trait to long ears. After conducting a chi square analysis, Ross concludes that his observations are significantly different than his expected values. What is the null hypothesis that Ross is testing?

	A.	Mendel's 3:1 ratio in the F2 offspring
	B.	Mendel's 9:3:3:1 ratio in the F2 offspring
	C.	Blending hypothesis
	D.	Hardy-Weinberg Equilibrium
	E.	None of the above.

	A.	We reject the null hypothesis; the population is in Hardy-Weinberg Equilibrium.
	B.	We reject the null hypothesis; the population is not in Hardy-Weinberg Equilibrium.
	C.	We accept the null hypothesis; the population is in Hardy-Weinberg Equilibrium.
	D.	We accept the null hypothesis; the population is not in Hardy-Weinberg Equilibrium.
	E.	Inconclusive; we need more information

Solutions

Expert Solution

When a sexually reproducing population do not show alteration in their allele frequencies the population is said to be in Hardy-Weingberg equation. This means that the genetic variation will remain the same over subsequent generations provided that disrupting factors and other assumptions do not work on it. So deviation from the Chi-Sq test indicate that the population is not following Hardy Weinberg equation. Null hypothesis is our expected outcome. We expect the population to be in HWE that is our null hypothesis. Since the population has a different obeserved value than the expected value, so the population deviates from HWE. So the correct option is: D.

Again our conclusion should be that we have to reject the null hypothesis. If our observed and expected values of HWE were almost equal to each other, we would have accepted null hypothesis. In this case we have to reject it. So the correct option is :

Option B.We reject the null hypothesis; the population is not in Hardy-Weinberg Equilibrium.

P.S. Please rate this answer Thumbs Up if you liked it. Thanks.

gladiator answered 1 year ago

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