How do heredity and inheritance relate to the data presented in these charts? BRCA1 mutation BRCA2 mutation No BRCA mutation Total

Number of patients 89 35 318 442

Average age at diagnosis 43.9 46.2 50.4

Preventive mastectomy* 6 3 14 23

Preventive oophorectomy* 38 7 22 67

Number of deaths 16 1 21 38

Percent died 18 2.8 6.9 8.6

*A mastectomy is the surgical removal of one or both breasts, either partially or fully. An oophorectomy is the surgical removal of an ovary or ovaries.

The phlogiston theory in the 17th century attempted to explain burning. the theory stated that combustable objects contained a material called phlogiston, a substance without mass, color, odor, etc. after objects burned, the objects were dephlogistonated and were then in their true form. the phlogiston theory was accepted until the 18th century, when lavoisier proved that combustion requires a gas that has mass. phlogiston is considered a) to be scientific knowledge b) not to be scientific knowledge c) to be proven by scientific method d) to be accepted in the modern scientific community

Which image shows labeled organelles that are present only in plant cells?

Why is it important to study each branch of earth science?