TLS Online TPP Program

#Question id: 3252


 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).

#Unit 9. Evolution & Diversity of Life Forms
  1. The probability that the brother is a carrier is 1/2)

  2. If the brother has a child with a healthy unrelated partner the probability that the child will be affected is 1 in 150.

  3. If the brother has a child with his first cousin the probability that the child will be affected is 1 in 12)

  4. If the affected sister has a child with her first cousin the probability that the child will be affected is 1 in 4)

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TLS Online TPP Program

#Question id: 9194

#Unit 9. Evolution & Diversity of Life Forms

Zoonotic disease

TLS Online TPP Program

#Question id: 9195

#Unit 9. Evolution & Diversity of Life Forms

Philippe Bouchet and colleagues conducted a massive survey of marine molluscs on the west coast of New Caledonia. For 20% of the total species that were located and identified, only a single specimen was found. What does that suggest about the diversity of molluscs in this area?

TLS Online TPP Program

#Question id: 9196

#Unit 9. Evolution & Diversity of Life Forms

If all individuals in the last remaining population of a particular frog species were all highly elated, which type of diversity would be of greatest concern when planning to prevent the species from going extinct?

TLS Online TPP Program

#Question id: 9197

#Unit 9. Evolution & Diversity of Life Forms

What is the biological significance of genetic diversity between populations?

TLS Online TPP Program

#Question id: 9198

#Unit 9. Evolution & Diversity of Life Forms

Tropical forests are being converted to farm or pasture land at an alarming rate, and one major focus is on the biodiversity and the impact to these ecosystems. What is a direct benefit to humans that helps explain why these forests need to be preserved?

TLS Online TPP Program

#Question id: 9199

#Unit 9. Evolution & Diversity of Life Forms

Ecosystem services include processes that increase the quality of the abiotic environment. Which of the following processes would fall under this category?