Which would you expect to see in a family that carries an x-linked recessive trait?

1. more females than males express the trait

2. more males that flames express the trait

3. both express equal amount of trait

What is the benefit of a bird migration? The cost?

A serves as a long-term storage area for water or nutrients

Sections of DNA, or a very small part of a chromosome) (a process of division of the genetic material (chromosomes) of a eukaryotic cell in which each of the two resulting nuclei receives a complete set of chromosomes that is the same as in the

True or False: A pedigree is used for tracing the occurrence of a trait through generations of a family.

Animals are heterotrophs. How might this have contributed to such great animal diversity?

1. Extracellular calcium enters the axon terminal, triggering the exocytosis of acetylcholine. 2. Acetylcholine is removed by acetylcholinesterase. 3. Acetylcholine binds to receptors and depolarizes the postsynaptic membrane. 4.

What is the function of the waxy, transparent top layer of leaves? A. It produces glucose. B. It releases oxygen. C. It absorbs light energy. D. It prevents water evaporation.

Within the body all molecules in the body can be found inside cells true or false

Using your knowledge of DNA, why do you think we need RNA, if we already have DNA in our bodies?

Is radioactive part of Bio? or no?