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TLS Online TPP Program

#Question id: 4597

Cotton-topped tamarins are small primates with tufts of long white hair on their heads. While studying these creatures, you notice that males with longer hair get more opportunities to mate and father more offspring. To test the hypothesis that having longer hair is adaptive in these males, you should ________.

#Section 2: Evolution

  1. test whether other traits in these males are also adaptive

  2. look for evidence of hair in ancestors of tamarins

  3. determine if hair length is heritable

  4. test whether males with shaved heads are still able to mate

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TLS Online TPP Program

#Question id: 4724

#Section 2: Evolution

Which of the following are true about crossing over ?
TLS Online TPP Program

#Question id: 16851

#General Aptitude

Healthy food is the key to a healthy life.
TLS Online TPP Program

#Question id: 12155

#Section 1: Ecology

Under which of the following conditions do the mathematical models for competition tell us that coexistence of two competing species is most likely? 
TLS Online TPP Program

#Question id: 10856

#Section 1: Ecology

By inhibiting sexual reproduction by their hosts, what advantage is gained by parasites such as endophytic fungi?
TLS Online TPP Program

#Question id: 3267

#Section 2: Evolution

In a typical Mendelian population, individuals carrying gene ‘a’ in homozygous condition suffer from phenylketonurea. Those with A in homozygous condition are normal. Others, who are heterozygotic with Aa, are carriers. If the frequency of ‘a’ in a population is 0.20, what is the percentage of normal individual in the population?