Which term means the letter combination that illustrates a trait? A. genotype
B. phenotype
C. allele
D. hybrid

What causes an unsaturated fatty acid to have a different shape than a saturated fatty acid? o a. unsaturated fatty acids have more hydrogen atoms. o b. unsaturated fatty acids have double carbon bonds. o c. unsaturated fatty acids have more nitrogen atoms. o d. unsaturated fatty acids have single carbon bonds.

The kind of fertilization found in the majority of aquatic animals is (internal or external) fertilization.

The science for classifying and naming organisms is known as