What is the primary source of the electrons used in the mitochondria?
a. water
b. glucose
c. atp
d. cellulose
e. oxygen

Some heterozygous alleles create variations in expression so that there is not a clear dominant or recessive allele. question 1 options: true false

Here's one way to follow the scientific method. place the missing steps in the correct position in the process.

An example of a trait that would be considered acquired and inherited is a. a cleft chin b. muscle tone c. scar tissue d. freckled skin