A family has two male children one brother has a straight thumb a straight thumb while the other brother has a bent thumb what causes this difference

In controlled experiments, members of the experimental group are exposed to the suspected cause by select one: a. the members of the groups themselves b. a random process c. the experimenters

Which factor would affect photosynthesis the least? amount of carbon dioxide in the air nitrates in the soil amount of light availability of water in the soil?

What happens when blood volume is lost from the body?

What digestive organ produces insulin, glucagon, and hydrolytic enzymes?

Smooth muscle contractions are responsible for pushing a baby out of its mother's uterus during childbirth true or false?

Which scientist disproved the ideas of spontaneous generation

Many fault lines are obvious at the surface. How can the epicenter of an earthquake be located miles away from the fault line?

The harmless scarlet kingsnake has scales in a coloration and pattern resembling the scales of the dangerous coral snake. The scarlet kingsnake is using to avoid predation

Charles Darwin came up with the system we use to name and classify organisms. True False

8. Cystic fibrosis is caused by a recessive allele. The frequency of this allele is 0.1 in a population of 2,500. a. What is the frequency of the dominant allele? b. How many people in this population will have cystic fibrosis? c.