TLS Online TPP Program

#Question id: 1389


 Why has C. elegans proven to be a useful model for understanding apoptosis?

#Section 3: Genetics, Cellular and Molecular Biology
  1. C. elegans does not naturally use apoptosis, but can be induced to do so in the laboratory.

  2. C. elegans undergoes a fixed and easy-to-visualize number of apoptotic events during its normal development.

  3. C. elegans has large cells wherein apoptosis is easily observed without the aid of a microscope.

  4. As C. elegans ages, its cells die progressively until the whole organism is dead.

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TLS Online TPP Program

#Question id: 3625

#Section 3: Genetics, Cellular and Molecular Biology

If a heterozygous two recessive mutation at different site will give mutant phenotype when gene involved

TLS Online TPP Program

#Question id: 3626

#Section 3: Genetics, Cellular and Molecular Biology

The major blood group locus in humans produces types A (genotypes AA or AO), B (genotypes BB or BO), AB (genotype AB), or O (genotype OO). Parents who are type AB and type O, what are the possible blood types of their offspring?

TLS Online TPP Program

#Question id: 3627

#Section 3: Genetics, Cellular and Molecular Biology

A cross is made between two plants with white flowers. All the F1 progeny had red colored flower. This is because of

TLS Online TPP Program

#Question id: 3628

#Section 3: Genetics, Cellular and Molecular Biology

Two mutant plants, both bearing white flowers, were crossed. All F1 plants had red colored flowers. Which one of the following conclusions is correct?

TLS Online TPP Program

#Question id: 3630

#Section 3: Genetics, Cellular and Molecular Biology

In the pearl-millet plant, color is determined by three alleles at a single locus: Rp1 (red), Rp2 (purple), and rp (green). Red is dominant over purple and green, and purple is dominant over green (Rp1 > Rp2 > rp). What will be expected phenotypes and ratios of offspring produced by the Rp1/rp × Rp2/rp crosses?

TLS Online TPP Program

#Question id: 3633

#Section 3: Genetics, Cellular and Molecular Biology

In a maternity ward, four babies become accidentally mixed up. The ABO types of the three babies are known to be A, B, and AB. The ABO types of the four sets of parents that are clamed are determined.

(A) AB X O  (B) A X O, (C) A X AB, (D) B  X O.

Following some statement is given

A. A blood group baby must be child of Parent B

B. B blood group baby must be child of Parent A

C. AB blood group baby must be child of Parent A

D. AB blood group baby must be child of Parent C

Which of the following above statement is correct?