TLS Online TPP Program

#Question id: 28493


Zone of polarizing activity (ZPA) involves in which patterns of cell fates?

#Unit 5. Developmental Biology
  1. anterior-posterior axis
  2. dorsal-ventral axis
  3. left-right axis
  4. proximal-distal axis
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TLS Online TPP Program

#Question id: 3338

#Unit 11. Evolution and Behavior

If the expected frequency of heterozygotes in a population (based on the Hardy–Weinberg law) is 0.4, but the observed frequency is 0.2, what is the inbreeding coefficient?

TLS Online TPP Program

#Question id: 3339

#Unit 11. Evolution and Behavior

In a plant species, flower color locus either homozygous or heterozygous with genotype RR-red, Rr- pink and rr- white. The Proportional of pink flower in generation 0 is .50.  What is the level of remaining pink flower in a third generation of repeated selfing? 

TLS Online TPP Program

#Question id: 3340

#Unit 11. Evolution and Behavior

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

TLS Online TPP Program

#Question id: 3341

#Unit 11. Evolution and Behavior

In a given population of 400 individuals, 64 percent of population is caused  cancer due to completely dominat allele B. Assuming the population is in Hardy- Weinberg equilibrium, which of the following is the expected proportion of individuals who are not expected to develop the cancer?

TLS Online TPP Program

#Question id: 3342

#Unit 11. Evolution and Behavior

Neutral alleles are those that do not alter fitness and average reproductive success does not differ between individuals that carry one neutral allele or the other. The frequencies of these neutral alleles may change in a population by

TLS Online TPP Program

#Question id: 3343

#Unit 11. Evolution and Behavior

Following genotype frequency as hardy Weinberg genetic equilibrium in figure. What is the frequency of A1 and A2 allele?