If the sex ratio in a population is significantly different from 50:50, then which of the following statements will always be accurate?

TLS Online TPP Program

#Question id: 763

#SCPH28 | Zoology

Which of the following could be an effect of miRNA regulation?

TLS Online TPP Program

#Question id: 14495

#SCPH01 Biochemistry

A bag contains 5 white and 3 black balls. Two balls are drawn at random one after the other without replacement. The probability that both the balls drawn are black is

TLS Online TPP Program

#Question id: 5220

#SCPH06 I Botany

In comparing the genomes of humans and those of other higher primates, it is seen that humans have a large metacentric pair we call chromosome #2 among our 46 chromosomes, while the other primates of this group have 48 chromosomes and any pair like the human #2 pair is not present; instead the primate groups each have two pairs of midsize acrocentric chromosomes. What is the most likely explanation?

TLS Online TPP Program

#Question id: 15658

#SCPH01 Biochemistry

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium.

Next, you isolate a third mutant, MelC–, which gives constitutive melibiase expression. The MelC– mutation is closely linked to Mel1 and MelB–. Genetic tests of the MelC– mutation yield the following:

 

As above, classify the MelC– mutation in terms of its basic genetic properties and explain how you arrived at your conclusions.

TLS Online TPP Program

#Question id: 16494

#SCPH01 Biochemistry

Few examples of plant vectors produced from viruses