DNA lesions that cause large distortions in the helical structure of DNA generally are repaired by the nucleotide-excision system, a repair pathway critical to the survival of all free-living organisms. 

TLS Online TPP Program

#Id: 4528

#Unit 11. Evolution and Behavior

There are four known forces that are involved in evolution:

1)mutation,

2) genetic drift

3) gene flow or migration

4) selection.

TLS Online TPP Program

#Id: 414

#Unit 2. Cellular Organization

H2AX subtype is has a C-terminal tail that is distinct from the canonical H2A, characterized by a SQEL/Y motif at the end.

TLS Online TPP Program

#Id: 9936

#Unit 4. Cell Communication and Cell Signaling

Extracellular Bacteria

TLS Online TPP Program

#Id: 9648

#Unit 4. Cell Communication and Cell Signaling

MEK is a dual-specificity protein kinase

phosphorylates its target proteins on both tyrosine and serine/threonine

TLS Online TPP Program

#Id: 9428

#Unit 11. Evolution and Behavior

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