Three distinct classes of photoreceptors mediate the effects of UV-A/blue light (320–500 nm): the cryptochromes, phototropins and the ZEITLUPE (ZTL) family of proteins

TLS Online TPP Program

#Id: 10032

#XL - T Zoology

Within minutes of stimulation of the cell, β subunit of

I-κB kinase becomes activated by phosphorylation

TLS Online TPP Program

#Id: 8907

#XL - T Zoology

Centromere associated cohesins are specifically protected from phosphorylation dependent removal by protein phosphatase 2A

TLS Online TPP Program

#Id: 8983

#XL - T Zoology

Which is a group of interbreeding, sexually reproducing individuals that have a common set of genes—the gene pool. 

TLS Online TPP Program

#Id: 9428

#XL - T Zoology

A- Parental investment is high in females than male

Reason - Eggs are much larger than sperm.

Females are responsible for gestation and lactation.

B - Parental investment is high in males than female - very rare

Male Mormon crickets transfer a protein-containing spermatophore to females during mating. Almost 30% of a male’s body weight is made up by the spermatophore.

C- Parental investment of males is equal to female

Degree of mate choice should be equal between the sexes.

No sexual dimorphism

Present in bird

TLS Online TPP Program

#Id: 10671

#XL - R Botany

Vascular Cambium

The meristematic layer that is responsible for cutting off vascular tissues – xylem and pholem – is called vascular cambium

young stem it is present in patches as a single layer between the xylem and phloem. Later it forms a complete ring