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 contains dozens of carcinogen

Which of the following actual (i. e., real) products of biological activity is not likely to be a source of the increases in greenhouse gases observed in recent history? A.

Which organism begins this food chain and is a producer? Grass, snake, grass

Which of the following is transmitted by Aedes mosquitoes? A. yellow feverB. both dengue fever and yellow feverC. malariaD. dengue fever, yellow fever, and malariaE. dengue fever

Select the three correct answers. a. There is little to no intergenic space on bacterial chromosomes, which makes long-range-acting enhancer sequences unnecessary. b.

The correct sequence going from smallest to largest is Select one: a. cell - molecule - tissue - organelle - atom. b. atom - molecule - organelle - cell - tissue. c. molecule - atom - organelle - tissue - cell. d.

What Three things should you check when deciding the reliability of science articles?

How does sediment form? A weathering breaks down rocks and other material. B chemical changes cause sediment to cement together. C loose material is compacted by pressure. D molten rock cools below the earth surface

Which of the following are benefits of cardio exercise? A. Resting blood pressure decreases B. Energy levels increase C. The heart becomes more efficient D. All of the above

Describe what happens to an egg during the first 14 days of the cycle?