Answer:
to learn about its history/formation
Explanation:
False,your respiratory muscle expand each time when you exhale.
I know all about this, but could you specify what you mean?
A dominant trait can be shown both when an organism is homozygous dominant AND heterozygous. Two different genotypes give the same visible result so a testcross is needed to be able to accurately say if the organism is homozygous dominant or heterozygous