Genotypes of leopard frogs from a population in central Kansas were determined for a locus that encodes the enzyme malate dehydrogenase. The following numbers of genotypes were observed: What would be the expected numbers of genotypes if the population were in Hardy-Weinberg equilibrium?

TLS Online TPP Program

#Question id: 31309

#Unit 1. Molecules and their Interaction Relevant to Biology

Which one of the following interactions pairs plays least role in stabilizing B-DNA?

TLS Online TPP Program

#Question id: 12991

#Unit 1. Molecules and their Interaction Relevant to Biology

Choose the correct statements

a. Secondary structures are stabilized by hydrogen bonds.

b. Hydrogen bond always formed between non bonded atoms.

c. the folded length of an amino acid in α-helix reduced almost 3 times than linear structure.

d. Only dihedral angle changes during the formation of secondary structure while bond length remains unchanged

TLS Online TPP Program

#Question id: 3785

#Unit 3. Fundamental Processes

The elongation of the leading strand during DNA synthesis

TLS Online TPP Program

#Question id: 15836

#Unit 8. Inheritance Biology

You are interested in a new type of autosomal dominant mutation that gives purple eyes in Drosophila. You have a true-breeding purple-eyed line carrying a mutation that you call pr-1. You have isolated a second purple-eyed mutation that you call pr-2, which you have established in a true-breeding line that also carries a recessive marker st, which gives stubby legs. You cross a fly from the pr-1 line to a fly from the st, pr-2 line producing F1 females which you then cross to males from a true breeding st line (normal eyes). From this cross, 1000 progeny flies can be categorized into four different phenotypic classes:

                   

What is the phenotype of a pr-1 pr-2 double mutant?

TLS Online TPP Program

#Question id: 20309

#Unit 7. System Physiology – Animal

The precursor of all adrenal medullary hormones secretion: