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TLS Online TPP Program

#Question id: 15007

You set up a cross between true breeding wild type male fruit flies and true breeding female flies with a yellow body color. You notice in the F1 generation that half the flies, specifically all the males, have yellow body color while the females are wild type (gray). Which of the following explanations is the most likely?

#Unit 8. Inheritance Biology
  1. Some of your females had already mated with yellow males before you collected them.
  2. Some of your parental flies must have had a new mutation in their germ cells.
  3. The mutation which causes yellow body color is on the X chromosome.
  4. The mutation which causes yellow body color is on the Y chromosome.
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TLS Online TPP Program

#Question id: 28566

#Unit 5. Developmental Biology

Which of the following protein act as an osmosensor?
TLS Online TPP Program

#Question id: 269

#Unit 1. Molecules and their Interaction Relevant to Biology

Which type of RNA is the most abundant in living cells (by percent)?
TLS Online TPP Program

#Question id: 34126

#Unit 7. System Physiology – Animal

Which of the following mitochondrial enzyme, known as P450c17?
TLS Online TPP Program

#Question id: 18821

#Unit 13. Methods in Biology

The PCR technique designed to minimize amplification of non-specific PCR products by using 2 primer set is
TLS Online TPP Program

#Question id: 26880

#Unit 10. Ecological Principles

At the time of first colonisation extinction is __A__ and immigration rate is__B___