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TLS Online TPP Program

#Question id: 5472

Plant height of wild Solanum nigrum is controlled by four pair of polygene. A plant genotype AaBBCcDd with 150 cm height but B plant genotype aabbccdd with 125 cm height present in their population. Following some plants with genotype AABBCCDD, AaBbCCDD, AabbccDD, aaBBccdd and their expected height in cm respectively is

#Unit 8. Inheritance Biology

  1. 165, 150, 135, 130

  2. 150, 140, 145, 135

  3. 165, 150, 140, 135

  4. 165, 155, 140, 135

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TLS Online TPP Program

#Question id: 31237

#Unit 2. Cellular Organization

If a cell in the G1 phase is fused with a cell in the S phase, then what will happens?
TLS Online TPP Program

#Question id: 23833

#Unit 2. Cellular Organization

Which of the following is NOT a key determinant of Myosin II?
TLS Online TPP Program

#Question id: 12238

#Unit 10. Ecological Principles

The mussel Mytilus edulis thrives in saline habitats, in both the highly salty seawater of tidal zones and the less salty estuaries. This results in two kinds of populations: one adapted to the higher salt concentrations of the tidal zone, and one adapted to the lower salt concentrations of the estuary. It has been found that the more salt-tolerant populations have high frequencies of an allele that produces an enzyme involved in maintaining osmotic equilibrium. Conversely, estuarine mussels having the same enzyme seem to be disfavoured and have a much higher death rate than mussels without the allele. Adult estuarine populations do have lower frequencies of this allele. Each spring, large numbers of larvae from  the salty habitats pour into the estuaries.
The invasion of the seawater larvae would be expected to facilitate change in the genetic structure of the estuarine population by a process called
TLS Online TPP Program

#Question id: 4780

#Unit 8. Inheritance Biology

In chickens, comb shape is determined by alleles at two loci (R, r and P, p). A walnut comb is produced when at least one dominant allele R is present at one locus and at least one dominant allele P is present at a second locus (genotype R_ P_). A rose comb is produced when at least one dominant allele is present at the first locus and two recessive alleles are present at the second locus (genotype R_pp). A pea comb is produced when two recessive alleles are present at the first locus and at least one dominant allele is present at the second (genotype rrP_). If two recessive alleles are present at the first and at the second locus (rrpp), a single comb is produced. Which of the following cross would produce ½ walnut and ½ pea comb ?
TLS Online TPP Program

#Question id: 5599

#Unit 5. Developmental Biology

During the early part of the cleavage stage in frog development, the rapidly developing cells