Penetrance specifically refers to the expression of lethal genes in heterozygotes. true or false

How can you approximate the number of calories required to keep you in energy balance?

In 1992, hurricane andrew left a wake of destruction through florida. one victim of the storm was a reptile-breeding facility. over 900 burmese pythons were set free, and today thousands of pythons live in florida. these pythons are an invasive species, or a harmful species not native to the region. 1. what impacts do you think the burmese pythons might have on local ecosystems

Which would be the most useful source of evidence to support mcneill's contention?