TLS Online TPP Program

#Question id: 28735


Most common CFTR mutation is a ΔF508 causes_
a)Changing the conformation of the cytosolic portion of CFTR so that the signal is unable to bind to Sec24
b)Changing the conformation of the cytosolic portion of CFTR so that the signal is unable to bind to Sec23
c)blocking its packaging into COPII vesicles budding from the ER
d)blocking its packaging into COPI vesicles budding from the ER

Which of the following is correct result of mutated CFTR?

#Unit 2. Cellular Organization
  1. a and c
  2. a and d
  3. b and c
  4. b and d
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TLS Online TPP Program

#Question id: 3551

#Unit 8. Inheritance Biology

In angiosperm plant, assume that the male parent has an AA Bb genotype, and that the female parent has an aa BB genotype. What is genotype in endosperm nucleus, after reproduction between these two plants?

TLS Online TPP Program

#Question id: 3552

#Unit 8. Inheritance Biology

In corn, three dominant alleles, called A, C, and R, must be present to produce colored seeds. Which of the following genotype would produce 25 % color seeded plant, When cross with Aaccrr?

TLS Online TPP Program

#Question id: 3553

#Unit 8. Inheritance Biology

Diploid cell genotype AaBb undergoes meiosis that generates new combinations of alleles by which mechanism when gene A and B located on the same chromosome?  

TLS Online TPP Program

#Question id: 3554

#Unit 8. Inheritance Biology

The diploid cell with 6 pairs of chromosomes can divide. How many possible different combinations of maternal and paternal chromosomes in metaphase?

TLS Online TPP Program

#Question id: 3555

#Unit 8. Inheritance Biology

In watermelons, bitter fruit (B) is dominant over sweet fruit (b), and yellow spots (S) are dominant over no spots (s). The genes for these two characteristics assort independently. A homozygous plant that has bitter fruit and yellow spots is crossed with a homozygous plant that has sweet fruit and no spots. If an F1 plant is cross with the heterozygous for bitter and no spots, what phenotypes ratio are expected in the offspring?

TLS Online TPP Program

#Question id: 3556

#Unit 8. Inheritance Biology

Flower color in plant follows incomplete dominance. Cross between AA and aa results all F1 offspring are uniform were allowed to cross with AA genotype. What will be phenotype ratio?