After transcription begins, several steps must be completed before the fully processed mrna is ready to be used as a template for protein synthesis on the ribosomes. which three statements correctly describe the processing that takes place before a mature mrna exits the nucleus?

Poly-A tailing at 3' end

Capping at 5 ' end

Removal of Introns

Explanation:

Post transcription processing includes

1. Poly-A Tailing at 3'end: The 3'end terminus is polyadenlated in the nucleoplasm. This poly-A tail may be from 20-250 nucleotide long. This tail protects mRNA from attack by 3'exonuclease.

2. Capping at 5' end: Eukaryotic mRNAs are all capped at the 5' terminus by 7-methyl guanosine triphosphate. This occur in the nucleus.

3. Removal of Introns: the primary transcript contains coding region (exons) and non coding region (Introns). They intron are cleaved and exons are spliced. This is also done in the nucleus.

tsd is temerature dependent sex determination.

tsd: it is a type of environmental sex determination in which the temperature experienced during embryonic/ larval development (ambient temperature for development) determine the sex of the offspring.

crocodile displays the tsd where the ambient temperature of the developing egg determines the individual's sex. for example in the american alligator's eggs, incubation at 33 ºc produces mostly males, while incubation at 30 ºc produces mostly females. so if the american alligator's egg will get the ambient temperature (33 degree celcius)during embryonic development from egg, the offspring will be male and same for the female sex determination.

i think its y= -4x-14