Practice Questions

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#Question id: 5451

High heritability is best demonstrated in which of the following situations?

#SCPH28 | Zoology

Within a wild population of clover plants, there is a very low amount of variation in the number of leaves per stem.
When studying obesity in a human population, there tends to be less variation within families than across the entire population.
in a study of adopted children, the children's height is much more similar to that of their biological parents than their adoptive parents.
The DNR maintains records of deer shot each hunting season. In drought years, the average weight is much lower than in years of sufficient rain.

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#Question id: 11594

#I Life Science/ Life Sciences Group – I-V

Given some compounds that are the first stage inhibitor of gibberellin biosynthesis except?

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#Question id: 15887

#SCPH05 I Biotechnology

_______is the type of cell culture

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#Question id: 1730

#SCPH01 Biochemistry

What is the T-cell ligand binding B7 on a professional antigen-presenting cell?

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#Question id: 15657

#SCPH01 Biochemistry

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.

You next construct a MelA– MelB– double mutant, which gives the following behavior:

Which of your two models is consistent with this new data?

a) the MelA- MelB- double mutant is identical to the MelB- mutant

b) MelA- is epistatic to MelB-

c) MelB- is epistatic to MelA-

d) the MelA- MelB- double mutant is identical to the MelA- mutant

Which of the following is the correct prediction about the double mutants?

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#Question id: 24451

#SCPH06 I Botany

EEG can be recorded with: