TLS Online TPP Program

#Question id: 15451


T-cell dependent, B-cell activation require many signals except___

#Unit 4. Cell Communication and Cell Signaling
  1. Interaction with the T-cells through cross-links membrane immunoglobulin receptors (mIg)
  2. A separate interaction between CD40 (B-cell) and CD40L (T-cell)
  3. Signal by FDCs
  4. Delivers cytokines and other signals to its partner B cell
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TLS Online TPP Program

#Question id: 5450

#Unit 8. Inheritance Biology

Which of these definitions of heritability is most correct?

TLS Online TPP Program

#Question id: 5751

#Unit 8. Inheritance Biology

A biochemical mutant that must be supplied with a particular nutrient for growth would be described as a(n)

TLS Online TPP Program

#Question id: 5346

#Unit 8. Inheritance Biology

The following typical pedigree illustrates the key point that affected children are born to unaffected parents: Which of the following is correct statement?

TLS Online TPP Program

#Question id: 13144

#Unit 8. Inheritance Biology

Shell coiling of the snail Limnaea peregra(genetic maternal effect)  the shell coils (s+s+) which is termed dextral coiling, while some snails exhibiting sinistral coiling (ss). The allele for dextral (s +) is dominant over the allele for sinistral (s). If a male homozygous for dextral alleles (s+s+) is crossed with a female homozygous for sinistral alleles (ss) all of the F1 are heterozygous (s+s) and have a sinistral shell. If these F1 snails are self-fertilized, what is the phenotype of the F2 snail?

TLS Online TPP Program

#Question id: 12169

#Unit 8. Inheritance Biology

During the phenotypic variations, the genotype shows variation at different effect given in graph;


According to the graph , this is an example of,

TLS Online TPP Program

#Question id: 12168

#Unit 8. Inheritance Biology

The proportion of the total phenotypic  variation that is due to genetic differences is known as