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TLS Online TPP Program

#Question id: 4585

The cow Bos primigenius (which is bred for meat and milk) has a smaller brain and larger eyes than closely related wild species of ungulates. These traits most likely arose by ________.

#Unit 11. Evolution and Behavior

  1. natural selection, because these traits evolved in the population over time

  2. natural selection, because these traits were not consciously selected by humans

  3. artificial selection, because changes in these traits co-occurred with human selection for high milk output and high muscle content

  4. artificial selection, because these animals differ from their close relatives and common ancestor

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TLS Online TPP Program

#Question id: 5336

#Unit 8. Inheritance Biology

In a cross between a heterozygous, red-eyed female fruit fly and a white-eyed male, what percent of the male offspring will have white eyes?(white eyes are X-linked, recessive)  
TLS Online TPP Program

#Question id: 6950

#Unit 5. Developmental Biology

In mammalian development, the embryo will form from which population of cells?
TLS Online TPP Program

#Question id: 2921

#Unit 2. Cellular Organization

During which stage of the cell cycle is the chromosome content of a mammalian liver cell 1n?
TLS Online TPP Program

#Question id: 19694

#Unit 13. Methods in Biology

How to calculate heart rate from ECG?
a. by counting the number of QRS complexes
b. by counting the number of R Waves
c. by counting the number of P Waves
d. by counting the number of T Waves
TLS Online TPP Program

#Question id: 3435

#Unit 11. Evolution and Behavior

You turn on a light and observe cockroaches scurrying to dark hiding places. What have you observed?