Practice Questions

TLS Online TPP Program

#Question id: 10434

Movement of the phytochrome into the nucleus takes place, which of the following is incorrect prediction about this movement?

#Unit 6. System Physiology – Plant

Both phyA–GFP and phyB–GFP show light-activated import into the nucleus
the phyB fusion moves to the nucleus in the Pfr form only, and transport is slow, taking several hours for full mobilization
phyA–GFP can move in the Pfr or the Pr form, provided that it has cycled through Pfr first
phyA–GFP transport is promoted by red light and inhibited by far-red light, while transport of phyB–GFP is maximal under continuous far-red light

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TLS Online TPP Program

#Question id: 15821

#Unit 8. Inheritance Biology

Your friends Ben and Jane are contemplating having children and seek your genetic counsel. Ben and Jane are unrelated, but both have younger brothers with the same, extremely rare genetic trait. (In fact, Ben and Jane met at a support group meeting for children and families of children with this rare disorder.) Ben’s parents and Jane’s parents are all unaffected.

Assume that the trait is autosomal recessive with 80% penetrance. What is the probability that Ben and Jane’s first child will be affected?

TLS Online TPP Program

#Question id: 18969

#Unit 8. Inheritance Biology

Consider the ABO “blood type” gene. This single gene has three alleles called A, B, and O. There are four resultant “blood types” (phenotypic classes), as follows:C

Assume Hardy-Weinberg equilibrium. In Norway, the frequencies of the A and B alleles are 0.26 and 0.07, respectively. What is the frequencies of these six genotypes (AA, AO, BB, BO, AB, and OO);

TLS Online TPP Program

#Question id: 26859

#Unit 10. Ecological Principles

In marine food chains the Trophic-level transfer efficiency exceeds from

TLS Online TPP Program

#Question id: 4388

#Unit 3. Fundamental Processes

Which protein domains are found in nuclear-receptor family members?

TLS Online TPP Program

#Question id: 16138

#Unit 13. Methods in Biology

You obtain 6 BACs (of known order, as shown below) and 7 STSs (of unknown order) that derive from a region of mouse chromosome 16 whose genomic sequence has not yet been finished.

By PCR (using 20-bp primers at either end of each STS), you test each of the 6 BACs for the presence (+) or absence (-) of each of the 7 STSs. You obtain the following results:

Would you expect STS51 and STS52 to be present in BAC D?