TLS Online TPP Program

#Question id: 5223


In order to determine the probable function of a particular sequence of DNA in humans, what might be the most reasonable approach?

#Unit 11. Evolution and Behavior
  1. Prepare a knockout mouse without a copy of this sequence and examine the mouse phenotype.

  2. Genetically engineer a mouse with a copy of this sequence and examine its phenotype.

  3. Look for a reasonably identical sequence in another species, prepare a knockout of this sequence in that species and look for the consequences.

  4. Prepare a genetically engineered bacterial culture with the sequence inserted and assess which new protein is synthesized.

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TLS Online TPP Program

#Question id: 4823

#Unit 8. Inheritance Biology

Which one of the following DNA markers can be used to distinguish between a homozygote and heterozygote ?

TLS Online TPP Program

#Question id: 4824

#Unit 8. Inheritance Biology

If plant with genotype AaBb is test cross where A and B are link at 10 map unit  in trance configuration then the probability of getting AaBB and AaBb genotype respectively?

TLS Online TPP Program

#Question id: 4825

#Unit 8. Inheritance Biology

How many genetically different gametes can be made by an individual of genotype AaBbCcDd if gene A, B are completely link and other are unlink?

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: 4827

#Unit 8. Inheritance Biology

A cross between individuals with genotypes AaBbX aabb produces the following progeny:

AaBb -  83, aaBb- 21, Aabb-   19,  aa bb -77

Which of the following statements is true?

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.