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#Question id: 4330


Proto-oncogenes can change into oncogenes that cause cancer. Which of the following best explains the presence of these potential time bombs in eukaryotic cells?

#SCPH05 I Biotechnology
  1. Proto-oncogenes first arose from viral infections.

  2. Proto-oncogenes are mutant versions of normal genes.

  3. Proto-oncogenes are genetic "junk."

  4. Proto-oncogenes normally help regulate cell division.

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TLS Online TPP Program

#Question id: 3636

#SCPH12 I Genetics

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: 3636

#SCPH28 | Zoology

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

#SCPH01 Biochemistry

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: 3637

#SCPH12 I Genetics

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: 3637

#SCPH28 | Zoology

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

#SCPH01 Biochemistry

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?