What process occurs during transcription? Copying of DNA to form an mRNA strand
Synthesis of proteins that are coded for by mRNA
Replication of DNA to produce a complementary DNA strand
mRNA folding up by forming complementary bonds with itself

the dark variety, as they are not visible on the dark tree barks

explanation:

nucleus

would be most reasonable answer tbh

c) 50% there are four chromosomes. after crossing over, 2 of the four have been changed. that means any gamete has a 2 in 4 chance or 50% chance of receiving the mutated chromosome.

the tricuspid valve is present between right atrium and right ventricle