30 points! When is gene expression blocked in the lac operon system?

The repressor protein destroys the genes required to produce enzymes.

The repressor protein blocks the genes from making mRNA.

Lactose binds to the repressor and changes its shape.

RNA polymerase begins transcribing the genes.

In pea plants, yellow seed color (y) is dominant and green seed color (y) is recessive. based on the punnett squares, what are the chances that the offspring in the second generation will have green seeds? first generation y y y yy yy y yy yy second generation y y y yy yy y yy yy there is a % chance that the offspring will have green seeds.

Plz ! what does it mean for an allele to be dominant?

All other things being equal the size of a population will decrease if