TLS Online TPP Program

#Question id: 301


What explains the very high melting and boiling point of water?

#Unit 1. Molecules and their Interaction Relevant to Biology
  1. Strong dipole-dipole bonds between water molecules

  2. Strong hydrogen bonds between water molecules

  3. Dispersion forces which are present in all molecules

  4. Asymmetrical shape of the polar bonds.

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TLS Online TPP Program

#Question id: 3634

#Unit 8. Inheritance Biology

In the pearl millet plant, color is determined by three alleles at a single locus: Rp1 (red), Rp2 (purple), and Rp3 (green). Red is dominant over purple and green, and purple is dominant over green (Rp1 >Rp2 >Rp3). Which of the following parental cross would produce ½ had red, ¼ purple, ¼ green?

TLS Online TPP Program

#Question id: 3635

#Unit 8. Inheritance Biology

In the multiple allele series that determines coat color in rabbits, c+codes for agouti, cch for chinchilla and ch for Himalayan. Dominance is in the order c+>cch>ch. In a cross of c+/cch X cch/ch, what proportion of progeny will be chinchilla?

TLS Online TPP Program

#Question id: 3636

#Unit 8. Inheritance Biology

A man with type A blood group marries a woman with type A blood group. Their first child has type O blood. What is the genotype of the Man, proportion of his gametes are expected to contain the IA allele, and probability that their next child will have type A blood respectively:

TLS Online TPP Program

#Question id: 3638

#Unit 8. Inheritance Biology

Four different mutant lines showing similar phenotype were identified from a genetic screen. When genetic crosses among these mutants were carried out, the first mutant was found to complement the second, third and fourth mutant lines. However, no other complementation groups do the four mutant lines belongs to?

TLS Online TPP Program

#Question id: 3639

#Unit 3. Fundamental Processes

Replication of a bacterial chromosome normally starts at a fixed point called:

TLS Online TPP Program

#Question id: 3640

#Unit 3. Fundamental Processes

Which of the following is true for the mechanism of excision repair?