TLS Online TPP Program

#Question id: 3886


Which one of the following statements about the reverse transcriptases of retroviruses and the RNA replicases of other single-stranded RNA viruses, such as R17 and influenza virus, is correct?

#Unit 3. Fundamental Processes
  1. Both enzymes can synthesize either RNA or DNA from an RNA template strand.

  2. Both enzymes can utilize DNA in addition to RNA as a template strand.

  3. Both enzymes carry the specificity for the RNA of their own virus.

  4. Both enzymes have error rates similar to those of cellular RNA polymerases.

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TLS Online TPP Program

#Question id: 4756

#Unit 8. Inheritance Biology

In summer squash, white colour fruit (W) is dominant over yellow colour (w) and disc-shaped phenotype (D) is dominant over sphere-shaped phenotype (d). Determine the genotype of the parents gives 3/8 white, sphere, 3/8 white, Disk, 1/8 Yellow, Disk and 1/8 Yellow, Sphere?

TLS Online TPP Program

#Question id: 4757

#Unit 8. Inheritance Biology

The newborn baby of a mother having blood group O, Rh+ and father having blood group AB, Rh-, got mixed with other babies in the hospital. The baby with which of the following blood groups is not confirmable to be of the said couple?

(i) AB, Rh+                                                    (ii) O, Rh+

(iii) A, Rh+                                         (iv)  B, Rh+

TLS Online TPP Program

#Question id: 4758

#Unit 8. Inheritance Biology

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?

TLS Online TPP Program

#Question id: 4759

#Unit 8. Inheritance Biology

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

TLS Online TPP Program

#Question id: 4760

#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: 4761

#Unit 8. Inheritance Biology

which of the following statements about a lethal allele is not correct?