If a couple has a 50% chance of producing an XX chromosome offspring with red-green colour deficiency, what is the genotype of the couple?

For the couple (above) what is the percentage chance that their offspring will be XY with
normal colour vision?
*note* Please enter numbers only - up to a maximum of 3 digits (0-100)

Match the types of competition to their descriptions.

What happens when the cell copies its chromosomes

1. variations in a population of moths allow for some of its members to be able to adapt to environmental changes. the better adapted of the moths will be able to survive the change and thus prevail as the “fittest” of the species. (a) describe three mechanisms in which variation can occur within a species population. (b) explain which mechanism or mechanisms would be responsible for the survival of a population of peppered moths better than white moths in an environment affected by industrial soot. justify your answer.