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Insulators allow enhancers to affect genes on the opposite side of the insulator.

Insulators allow enhancers to affect genes on the opposite side of the insulator.

In fish, the dominant allele R codes for red tone and the recessive allele r codes for a white tone. This phenotype is controlled by the genetic maternal effect. If a rr red female mates with a Rr red male, what is the color of their offspring?

DNA methylation occurs at CpG islands and they will be unmethylated near promoters of actively transcribed genes.

The TATA box is a type of promoter sequence that specifies where transcription begins in prokaryotes.

If Lucas is affected by hemophilia, which is an X-linked recessive disease, and he marries Malena who is a normal woman without hemophilia in her family, what is the probability that they would have a carrier daughter or affected son?  

This pedigree is most likely:

In fish, the dominant allele R codes for red tone and the recessive allele r codes for a white tone. This phenotype is controlled by the genetic maternal effect. If a rr red female mates with a Rr red male, what is the color of their offspring?

The TATA box is a type of promoter sequence that specifies where transcription begins in prokaryotes.

This pedigree is most likely: