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#Question id: 4578


Which definition of evolution would have been most foreign to Charles Darwin during his lifetime? 

#XL - S Microbiology
  1. change in gene frequency in gene pools

  2. descent with modification

  3. the gradual change of a populationʹs heritable traits over generations

  4. populations becoming better adapted to their environments over the course of generations

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TLS Online TPP Program

#Question id: 3250

#XL - T Zoology

Consider a diploid population at Hardy-Weinberg equilibrium. For a locus with two alleles, the frequency of the A1A1, A1A2 and A2A2 genotype is 0.01, 0.18 and 0.81) Which of the following statement is correct?

TLS Online TPP Program

#Question id: 3251

#XL - T Zoology

Looking at 3 allele per locus and following Hardy Weinberg equilibrium what will be the expected heterozygosity if q1=0.5, q2=0.3, q3=0.2

TLS Online TPP Program

#Question id: 3252

#XL - T Zoology

 The unaffected brother of a cystic fibrosis affected girl is referred for genetic counseling. Assume that the population is in Hardy-Weinberg equilibrium. Which of the following is correct?  (Cystic fibrosis is an autosomes recessive inheritance with an incidence of 1 in 2500).

TLS Online TPP Program

#Question id: 3253

#XL - T Zoology

In a population 64% individuals of 1000 population are affected with autosomes dominant diseased. How many individuals are expected carry at least one dominant allele?

TLS Online TPP Program

#Question id: 3254

#XL - T Zoology

Consider a single locus with 2 alleles which are at Hardy-Weinberg equilibrium. If the frequency of the heterozygous genotypes is 0.42, what is the frequency of one homozygote in the population?

TLS Online TPP Program

#Question id: 3255

#XL - T Zoology

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 16 gm to 24 gm. Which of the following natural selection operate on this species?