A pea plant has the genotype PPTt. What are the possible allele combinations that it's gametes can contain?

Iguanas need to live in a habitat that is very warm, so the pet store warms their enclosures with "basking lights" which act as an artificial sun. describe how the three methods of thermal energy transfer may take place within the iguana's enclosure.

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

This is a situation in which genes are attached to an organism's sex chromosomes; the sex of an organism influences the expression of a gene.