A brown fruit fly was crossed with a black fruit fly as shown below. What is the probability of a resulting offspring being black?

A.

100%

B.

75%

C.

25%

D.

50%

Which statement best describes the events of September 11th? The attacks were unexpected by the American public. The attacks destroyed several government buildings. The attacks happened in spite of strong airline security.

According to the theory of mitochondria in cells today are the descendants of aerobic prokaryotes that used oxygen to generate energy

Is it possible for two organisms to have different genotypes but the same phenotype?

A landfill which a plastic or clay liner that prevents the leaking of waste into soil and groundwater is called? a) a sanitary landfill B) an unsanitary landfill C) a recycling center D) a toxic waste site

10. What can contaminate a river as a result of dredging? a. potash C. placer deposits b. seawater d. muddy sediments

What condition causes storms to occur • freezing of water droplets • Sudden change in air pressure • Condensation of water vapor • rapid heating of upper atmosphere

Explain the significance of anaphase 1

Explain the differences between the human egg and the chicken egg. Use what you see in the eggs and what you know about the way chickens develop in the shell and humans develop in the womb to formulate your answer

What is the product of spermatogenesis?

Meiosis and mitosis different?