In the yeast cross of ade2 met14 his3 x + + +, a total of 120 tetrads are analyzed. The following tetrad types are found in the numbers shown below each tetrad. The markers ade2, met14, and his3 are abbreviated a, m, and h and the wild type allele of each gene is indicated by +.

 

What were the other two types of tetrads (how many His+ and His– spores do they have)?

#Question id: 3312

#Unit 11. Evolution and Behavior

Hardy-Weinberg equilibrium, the frequencies of the two alleles A1 and A2 is 0.4 and 0.6. When you consider A2 is dominant allele of genetic disorder. The frequency of defected individuals, in population size 1000 is

#Question id: 3313

#Unit 11. Evolution and Behavior

Which one of the following statement is incorrect for the process of speciation?

#Question id: 3314

#Unit 11. Evolution and Behavior

The body weight of offspring of bird species is range between 12 gm to 18 gm. In a laboratory experiment, species was subjected to selection pressure having influence on the offspring body weight. After many generations of experimental selection pressure, the body weight range between 14 gm to 16 gm. Which of the following natural selection operate on this species?

#Question id: 3315

#Unit 11. Evolution and Behavior

Which one of the following statements is TRUE for Negative-frequency dependent selection?

#Question id: 3316

#Unit 11. Evolution and Behavior

There are two population A (N = 500) and B (N=50). Due to genetic drift, both populations will lose its genetic diversity in a generation. Such losses become magnified over many generations. After 20 generations, what will be lose its original variation?

#Question id: 3317

#Unit 11. Evolution and Behavior

Which of the following statements is NOT correct regarding effect of genetic drift?