Practice Questions

TLS Online TPP Program

#Question id: 7768

The insulin signaling pathway inhibits the synthesis of the Foxo transcription factor proteins that would otherwise increase cellular longevity. Downregulation of the insulin signaling pathway has several other functions, choose right one

#Unit 5. Developmental Biology

It appears to influence metabolism, increasing mitochondrial electron transport.
When the DAF-2 receptor is not active, cells increase the production of enzymes that prevent oxidative damage, as well as DNA repair enzymes.
This lack of insulin signaling increases fertility.
Decrease in DNA synthetic enzymes and in enzymes that protect against ROS is due to the Foxo/DAF-16 transcription factor

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TLS Online TPP Program

#Question id: 3629

#Unit 8. Inheritance Biology

Complementation test for four different mutant phenotype 1, 2 , 3 and 4 were allowed and detect phenotype given table

Pair of mutant	phenotype
1 & 4	wild
1 & 3	wild
2 & 3	wild
2 & 4	mutant

What are number of citron that four mutant were belong

TLS Online TPP Program

#Question id: 3634

#Unit 8. Inheritance Biology

In the pearl millet plant, color is determined by three alleles at a single locus: Rp1 (red), Rp2 (purple), and Rp3 (green). Red is dominant over purple and green, and purple is dominant over green (Rp1 >Rp2 >Rp3). Which of the following parental cross would produce ½ had red, ¼ purple, ¼ green?

TLS Online TPP Program

#Question id: 3630

#Unit 8. Inheritance 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: 15011

#Unit 8. Inheritance Biology

Which of the following statements about a lethal allele is NOT correct?

TLS Online TPP Program

#Question id: 15009

#Unit 8. Inheritance Biology

A mutation in which most of the protein coding sequence of the gene is removed is most likely to be which type of allele?

TLS Online TPP Program

#Question id: 17675

#Unit 8. Inheritance Biology

In humans, albinism (unpigmented skin, hair, and eyes) is due to an enzymatic deficiency, and it is an autosomal recessive trait. Suppose that in a small country of one million people (“Generation 1”), there are 500 aa albinos and 9000 Aa heterozygous carries. If the Generation 1 follow the Hardy-Weinberg equilibrium?