22. Organisms that have two identical alleles for a particular trait are said to be a homozygous
c. heterozygous
b. hybrid
d. dominant

Is there any species that went extinct in recent years due to natural causes (not caused by human interaction). if so, what caused it?

Did the vinegar diffuse all the way to the center of any of the cubes? if so, which ones? what does this tell you about surface area-to-volume ratio and the diffusion rate?

The embryos of a bird, a reptile, and a mammal are similar in appearance. how does comparing the physical appearance of embryos of different species support the theory of evolution? a. it shows that these organisms share a common ancestor. b. it provides evidence that these organisms eat the same foods. c. it shows that these organisms share the same habitat. d. it provides evidence that these organisms suffered a genetic mutation.