In your own words, explain the laws of segregation and independent assortment from a molecular perspective. Alternatively, create your own analogy to illustrate these laws.

You inspect an ear of corn and find the following number of kernels: 461 red and starch, 142 red and sweet, 156 yellow and starchy and 53 yellow and sweet. a. What genotype did the parent corn plants probably have? b. Support your answer by working out the cross with a Punnett square

I have seen that this was answered as C, Why is the answer C, how is that not evidence of it being genetic? Shouldnt it be none of the above? Question: Of the following, which supports the idea that alcoholism has no genetic or a low genetic component? a) Some strains of mice select alcohol over water 75% of the time, whereas others shun alcohol. b) The concordance value is 55% for MZ twins and 28% for DZ twins. c) Biological sons of alcoholic men who have been adopted have a rate of alcoholism more like that of their adoptive fathers. d) There is a 20% to 25% risk of alcoholism in the sons of alcoholic men. e) None of these.

What is heterosis? Discuss whether it is caused by a single geneor several genes. Discuss the two major hypotheses proposedto explain heterosis. Which do you think is more likely to becorrect?

You are interested if whether several genes of a certain species of beetle assort independently. So, you conduct several generations of matings, and after you have collected all your data, you are ready to analyze your results. You conduct a Chi2 test to test your hypothesis. You have 6 groups and calculate a Chi? = 13.22. Given that the critical value at 0.05 level of %3D significance = 11.07 at df = 5, %3D (A) State your null hypothesis. (B) Should you accept or reject your null hypothesis? (C) Why did you arrive your decision in (B)?

Alloploids are produced by crosses involving two different species. Explain why alloploids may be reproductively isolated from the two original species from which they were derived. Explain why alloploids are usually sterile, whereas allotetraploids (containing a diploid set from each species) are commonly fertile.