TLS Online TPP Program

#Question id: 3032


Which of these statements about prokaryotes is correct?

#Unit 2. Cellular Organization
  1. Bacterial cells conjugate to mutually exchange genetic material.

  2. Their genetic material is confined within a nuclear envelope.

  3. They divide by binary fission, without mitosis or meiosis.

  4. Genetic variation in bacteria is not known to occur, nor should it occur, because of their asexual mode of reproduction.

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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: 3637

#Unit 8. Inheritance Biology

Parents that are homozygous for different mutations a, b and c are crossed, producing offspring that are heterozygous as following

aa X bb        =  ab  (X)          

 bb X cc         =  bc  (Y)

aa X cc          =   ac  (Z)

If a and b belong to same locus but b and c belong to different locus then phenotype of heterozygote

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: 11634

#Unit 8. Inheritance Biology

Given below, is the result of a complementation test for six independent mutants (A to H) '+' represents complementation; '-' represents noncomplementation Based on the above, which one of the following conclusions is correct?