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TLS Online TPP Program

#Question id: 9052

Which of the following causes seasons on Earth?

#Section 2: Evolution
  1. the variation in proximity of the Earth to the sun at different times of the year
  2. the constant tilt of the Earth, combined with its orbit around the sun
  3. the distance between the Earth and the sun in winter versus in the summer
  4. the variation or wobble of Earth's tilt during the year
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TLS Online TPP Program

#Question id: 9579

#Section 1: Ecology

Allen’s rule states that,
TLS Online TPP Program

#Question id: 4620

#Section 2: Evolution

The upper forelimbs of humans and bats have fairly similar skeletal structures, whereas the corresponding bones in whales have very different shapes and proportions. However, genetic data suggest that all three kinds of organisms diverged from a common ancestor at about the same time. Which of the following is the most likely explanation for these data?
TLS Online TPP Program

#Question id: 4934

#Section 2: Evolution

What is another hypothesis regarding the formation of polymers such as proteins and nucleic acids?
TLS Online TPP Program

#Question id: 3366

#Section 2: Evolution

Red-Green color blindness is an X-linked recessive disorder. In a population which is in the Hardy-  Weinberg equilibrium, the incidence of occurrence of this in males is 2:2000. What will be the expected incidence of affected homozygous females?
TLS Online TPP Program

#Question id: 3448

#Section 2: Evolution

Which scientist devised a rule that predicts when natural selection should favor altruism?