Cutting DNA with a particular restriction enzyme produces DNA fragments that can be separated by .

Attached earlobes are a reccesive trait in humans. in the tree below, people with attached earlobes are shaded in. which best describes labeled x in the tree? a: a female with one recessive allele b: a female with no recessive allelesc: a male with no recessive allelesd: a male with one recessive allele

How many pairs of autosomes do humans have?

The footprints of a dinosaur and the burrow of an ancient shrimp are examples of which kind of fossils