All of the following circumstances, except can produce new combinations of genetic traits in sperm and eggs that are different from the parents.
a) errors during meiosis
b) errors during mitosis
c) crossing over during meiosis
d) mutations due to exposure to chemicals

Rue or false siblings look simila rbecause they each have some traits of their parents.

All individuals have two alleles for a given trait. according to mendel's these alleles are passed down one each from both mother and father.

Drag each tile to the correct box. the body monitors the levels of oxygen in the blood to regulate breathing. isabel is running in a marathon and is near the finish line. she feels out of breath. how will her nervous system work to generate a reaction? arrange the tiles in chronological order. isabel's breathing rate increases. sensory receptors in the arteries detect low oxygen levels. the brain sends signals through motor neurons. sensory neurons generate an impulse. the central nervous system relays an impulse to certain brain regions.