Eukaryotic genes can be silenced by and 3. in eukaryotes, how can several genes coordinate their expression in response to the same environmental signals

The answer is transcriptional and post-transcriptional regulation.  Transcriptional regulation regulates the conversion of DNA to RNA by RNA polymerase. Post-transcriptional involves the regulation at RNA level. AN example of transcriptional regulation is the use of repressors on promoter regions. Post-transcriptional involves microRNA.

Through control of their transcription. This  is possible through the mechanism of the non-coding regions of DNA that are significant in epigenetic. They are involved in the methylation of particular regions of DNA to silence them through folding of the DNA regions around histones.

a

explanation:

many plants naturally reproduce this way, but it can also be induced artificially. horticulturalists have developed asexual propagation techniques that use vegetative plant parts to replicate plants. success rates and difficulty of propagation vary greatly. monocotyledons typically lack a vascular cambium and therefore are harder to propagate.

the correct answer: the index of refraction of the second medium is lower i tried this persons answer and it was wrong this person is lying