TLS Online TPP Program

#Question id: 1390


Which of the following statements describes the events of apoptosis?

#Unit 4. Cell Communication and Cell Signaling
  1. The cell dies, it is lysed, its organelles are phagocytized, and its contents are recycled.

  2. The cell's DNA and organelles become fragmented, the cell dies, and it is phagocytized.

  3. The cell's DNA and organelles become fragmented, the cell shrinks and forms blebs, and the cell's parts are packaged in vesicles that are digested by specialized cells.

  4. The cell's nucleus and organelles are lysed, and then the cell enlarges and bursts.

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TLS Online TPP Program

#Question id: 11627

#Unit 8. Inheritance Biology

The interaction of two loci that determine fruit color in summer squash, which is commonly found in one of three colors: yellow, white, or green. When a homozygous plant that produces white squash is crossed with a homozygous plant that produces green squash and the F1 plants are crossed with each other, the following results are obtained:

 12/16 plants with white squash

 3 /16 plants with yellow squash

 1 /16 plants with green squash

 This is the case of___

TLS Online TPP Program

#Question id: 11626

#Unit 8. Inheritance Biology

A locus determines the type of pigment produced in the squash, with yellow (Y_) dominant over green (yy). This locus is expressed only in ww plants, which lack the dominant inhibitory allele W. We can assign the genotype ww Y_ to plants that produce yellow squash and the genotype ww yy to plants that produce green squash. The genotypes and their associated phenotypes are:


What will be the correct prediction about these pathway?

TLS Online TPP Program

#Question id: 11625

#Unit 8. Inheritance Biology

The following is a hypothetical pathway responsible for the coat color in Labrador retrievers, The pathway is controlled by two independently assorting genes ‘B’ and ‘E’ encoding enzymes as shown below. Mutant alleles ‘b’ and ‘e’ code for non- functional proteins.


What is the expected progeny after selfing a plant with the genotype BbEe?

TLS Online TPP Program

#Question id: 11624

#Unit 8. Inheritance Biology

The effect of gene interaction is that one gene masks (hides) the effect of another gene at a different locus, a phenomenon known as

TLS Online TPP Program

#Question id: 11623

#Unit 8. Inheritance Biology

Insulin like growth factor in mice, where IgF+ represents tall, IgF- represent dwarf phenotype, if cross between male tall (IgF+/IgF+) with female dwarf (IgF-/IgF-) resulting progeny will shows tall phenotype , while reciprocate this cross resulting progeny  shows dwarf phenotype. If resulting these F1 progeny cross each other then what will be the ratio in F2  generation?

TLS Online TPP Program

#Question id: 11622

#Unit 8. Inheritance Biology

If a cross is made between two parental homozygous allele female Red phenotype  (RR) cross with male white phenotype (rr)  resulting F1 progeny  is all red phenotype (Rr), if reciprocate this cross the resulting progeny will be change.

a) Gene expression will be the parental origin dependent

b) uniparental gene contribution and also the expression of the gene is uniparental

c) Gene expression independent over parental origin

d) Gene contribution is biparental but the expression of the gene is uniparental

This prediction concludes that,