TLS Online TPP Program

#Question id: 18741


At times it is observed that non-recombinant plasmids are more than that of recombinant plasmids. Choose the correct statement in regard to it.

#Unit 14. Methods in Biology
  1. It makes easier to get the recombinant plasmids from the mixture
  2. The ratio of insert DNA to vector DNA is reduced to get recombinant plasmids
  3. Alkaline phosphatase is used to get recombinant plasmids
  4. Alkaline phosphatase method is less reliable in comparison to the ratio method
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TLS Online TPP Program

#Question id: 12705

#Unit 8. Inheritance Biology

In Neurospora crasssa, the mutant exhibit poky phenotype, when a female of  poky strain is crossed with a normal strain acting as a male , all progeny individuals shows poky phenotype . however, the reciprocal cross resulted in all normal progeny. These results can be explained on the basis of 

TLS Online TPP Program

#Question id: 12706

#Unit 8. Inheritance Biology

When the genotype is determined by the bi-parental contribution, while the phenotypic effect is determined by the maternal nuclear gene. This effect exhibit on the basis of 

TLS Online TPP Program

#Question id: 15006

#Unit 8. Inheritance Biology

Which of the following is not a mechanism for sex determination?

TLS Online TPP Program

#Question id: 15007

#Unit 8. Inheritance Biology

You set up a cross between true breeding wild type male fruit flies and true breeding female flies with a yellow body color. You notice in the F1 generation that half the flies, specifically all the males, have yellow body color while the females are wild type (gray). Which of the following explanations is the most likely?

TLS Online TPP Program

#Question id: 15008

#Unit 8. Inheritance Biology

You have a white eyed, male fruit fly with vestigial wings and a wild type female known to be heterozygous for both traits. You know that vestigial is located on an autosome. What is the probability that a mating between these two flies will generate a female offspring with vestigial wings and white eyes?

TLS Online TPP Program

#Question id: 15384

#Unit 8. Inheritance Biology

A trait that appears to be dominant in one sex but recessive in the other is called: