TLS Online TPP Program

#Question id: 12837


Haploid yeast cells were grown in culture and stained with propidium iodide, a fluorescent dye that is incorporated into DNA. The x axis shows DNA content, the y axis the number of cells. The DNA content analysis shows different populations of cells.

Which of the following statement is correct regarding to above graph?

#Unit 2. Cellular Organization
  1. Cells with unreplicated DNA (1C) and with replicated DNA (2C). The cells between the two peaks represent cells that are in the process of undergoing mitosis.
  2.  Cells with replicated DNA (1C) and with unreplicated DNA (2C). The cells between the two peaks represent cells that are in the process of undergoing DNA replication.
  3. Cells with unreplicated DNA (1C) and with replicated DNA (2C). The cells between the two peaks represent cells that are in the process of undergoing DNA replication.
  4.  Cells with unreplicated DNA (1C) and with replicated DNA (2C). The cells between the two peaks represent cells that are in the process of arrest in G1 phase.
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TLS Online TPP Program

#Question id: 4919

#Unit 8. Inheritance Biology

Genes for cytoplasmic male sterility in plants are generally located in

TLS Online TPP Program

#Question id: 4928

#Unit 8. Inheritance Biology

A certain kind of snail can have a right-handed direction of shell coiling (D) or left handed coiling (d). If direction of coiling is due to a protein deposited by the mother in the egg cytoplasm, then a Dd egg-producing snail and a dd sperm-producing snail will have offspring of which genotype(s) and phenotype(s)?

TLS Online TPP Program

#Question id: 4929

#Unit 8. Inheritance Biology

Maternal inheritance of coiling of shell in snail (limnaea peregra) is well established. The dextral coiling depends on dominant allele D and sinistral coiling depends upon recessive allele d. A female F1 progeny of dextral(Dd) type is crossed with a male dextral (Dd). What will be the phenotype ratio in progeny?

TLS Online TPP Program

#Question id: 12703

#Unit 8. Inheritance Biology

In the plants, due to mutation in the mitochondrial genome causing cytoplasmic male sterility can be influenced by the nuclear gene (Rf),  which is dominant over the cytoplasmic mitochondrial genome. If a male sterile plant  is pollinated by the fertile male plant with homozygous (Rf)condition, the progeny obtained in F1 will have

TLS Online TPP Program

#Question id: 12705

#Unit 8. Inheritance Biology

In Neurospora crasssa, the mutant exhibit poky phenotype, when a female of  poky strain is crossed with a normal strain acting as a male , all progeny individuals shows poky phenotype . however, the reciprocal cross resulted in all normal progeny. These results can be explained on the basis of 

TLS Online TPP Program

#Question id: 23289

#Unit 8. Inheritance Biology

Preparation and staining techniques help to distinguish among chromosomes of similar size and shape, this staining techniques also distinguish the banding pattern of the chromosome at which stage of cell cycle?