TLS Online TPP Program

#Question id: 24246


Fibronectin binds to integrin through: 

#Unit 4. Cell Communication and Cell Signaling
  1. KH Motif
  2. Beta Hairpin Motif 
  3. leucine-zipper Motif 
  4. RGD Motif 
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TLS Online TPP Program

#Question id: 4826

#Unit 8. Inheritance Biology

In Drosophila melanogaster, vestigial wings are determined by a recessive allele of a gene that is linked to a gene with a recessive allele that determines black body color. T. H. Morgan crossed black-bodied, normal-winged females and gray-bodied, vestigial-winged males. The F1 were all gray bodied, normal winged. The F1 females were crossed to homozygous recessive males to produce testcross progeny. Morgan calculated the map distance to be 17 map units. Which of the following information is correct about the testcross progeny?

TLS Online TPP Program

#Question id: 4828

#Unit 8. Inheritance Biology

Consider two pairs of alleles, G/g and H/h, that follow complete dominance inheritance. The initial cross consisted of GG hh males and gg HH females, and the F I female progeny were test crossed with gg hh males to produce 380 Gghh progeny out of 1000 total progeny. What is approximate distance between Gene G and H.

TLS Online TPP Program

#Question id: 15667

#Unit 8. Inheritance Biology

You set up the following dihybrid mapping cross in fruit flies. 
P e+e+ roro cq cq x ee ro+ro+ cq+cq+. After backcrossing F1 males to ee roro cq cq females, you get the following results: gray body, rough eyes, claret eyes 576; ebony body, smooth, red eyes 564. How can you explain this result?

TLS Online TPP Program

#Question id: 15665

#Unit 8. Inheritance Biology

In deletion mapping, mutations can be localized to a region of the gene because:

TLS Online TPP Program

#Question id: 15660

#Unit 8. Inheritance Biology

Tetrad analysis automatically includes the centromere as an additional point in mapping crosses, because

TLS Online TPP Program

#Question id: 15595

#Unit 8. Inheritance Biology

How might the function of extracellular endonucleases help protect the bacterium from infection by viruses?