What is an “Obligate Allele”? Question 1 options:

1)

An allele that is required to be in a profile to determine someone’s ethnicity.

2)

An allele that is required to be in a parent’s profile to determine paternity.

3)

An allele that should to be in a profile but is not required.

4)

An allele that is required to determine a match.

5)

A set of alleles that are required to be passed on the all siblings.

Amniocentesis is a process in which amniotic fluid is taken from the mother's womb to identify any genetic abnormalities in the fetus. how would the discovery of the human genome contribute to this process?

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.

Which of the following explains why a tree is often used as a model to represent the principle of common descent