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TLS Online TPP Program

#Question id: 7060

What would be the result of a mutation in a maternal effect gene in a female Drosophila?

#Unit 5. Developmental Biology
  1. She will not develop past the early embryonic stage.
  2. All of her offspring will show the mutant phenotype, regardless of their genotype.
  3. Only her male offspring will show the mutant phenotype.
  4. Only her female offspring will show the mutant phenotype.
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TLS Online TPP Program

#Question id: 12513

#Unit 7. System Physiology – Animal

A 26-year-old construction worker is brought to the emergency room with a change in mental status after working a 10-hour shift on a hot summer day (average outside temperature was 97°F). The man had been sweating profusely during the day but did not drink fluids. He has a fever of 102°F, heart rate of 140 beats/min, and blood pressure of 100/55 mm Hg in the supine position. On examination, he has no perspiration, appears to have dry mucous membranes, and is poorly oriented to person, place, and time. Assuming that his kidneys were normal yesterday, which of the following sets of hormone levels describes his condition, compared with normal?
TLS Online TPP Program

#Question id: 1378

#Unit 4. Cell Communication and Cell Signaling

Which of the following apply to fibronectins? Please select all that apply.

a) They are disulphide linked dimers, with each polypeptide composed of a number of binding domains joined together by short flexible segments.

b) They have an essential role in linking the extracellular matrix to its underlying cells.

c) Like integrins, fibronectins are directly connected to the cytoskeleton.

d) They participate in 'inside out' and 'outside in' signalling mechanisms.
TLS Online TPP Program

#Question id: 12705

#Unit 8. Inheritance Biology

In Neurospora crasssa, the mutant exhibit poky phenotype, when a female of  poky strain is crossed with a normal strain acting as a male , all progeny individuals shows poky phenotype . however, the reciprocal cross resulted in all normal progeny. These results can be explained on the basis of 
TLS Online TPP Program

#Question id: 24644

#Unit 10. Ecological Principles

Which of the following layers is the zone of eluviation or maximum leaching?
TLS Online TPP Program

#Question id: 4625

#Unit 11. Evolution and Behavior

During a study session about evolution, one of your fellow students remarks, ʺThe giraffe stretched its neck while reaching for higher leaves; its offspring inherited longer necks as a result.ʺ Which statement is most likely to be helpful in correcting this studentʹs misconception?