Which structural layer of blood vessels is most responsible for maintaining blood pressure?

A researcher studied six independently assorting genes in a plant. Each gene has a dominant and a recessive allele: R black stem, r red stem; D tall plant, d dwarf plant; C full pods, c constricted pods; O round fruit, o oval fruit;

Which reproductive strategy does an organism use if it reproduces slowly and has only one offspring each time it reproduces? A) r-strategy B) environmental load C) endangered D) K-strategy

Similarities between amoeba and paramecium

Which parent do sons inherit recessive, sex linked trait from? Mother or father?

Which provides the master code needed for protein synthesis?

If the same parents have four boys, what is the probability their fifth child will be a girl?

Natural selection is often called survival of the fittest. However, often times breeding or artificial selection will create offspring create population different from the population of their ancestors.

Explain how micro evolution and migration can effect an ecosystem

What do all viruses have in common?

Sheath of schwann cell containing cytoplasm is called