Alex had two black rats (dominant). He allowed his black rats to mate and was shocked to see that three of the rat babies were black and one was an albino! What genotypes were the parents?

How is a door hinge like the joint in your knee

What is the correct name for SiS2

In humans, what is true of the cells that are produced as a result of meiosis? a. they contain the same amount of genetic information as their parent cell. b. the cells have 2 copies of each homologous chromosome c.

Deforestation of rain forest will likely lead to

Which is an example of a population? A. all the red tailed foxes in the meadow B. all the individuals making up a species C. one blade of grass in a prairie D. each goose in a gaggle of geese

How does a vascular plant's phloem differ from its xylem? A. Phloem is found only in the leaves. B. Only phloem transports water. c. Only water flows through phloem. D. Phloem has a two-way flow of materials,

Many mutations have been identified in the lac operon. A particular mutation prevents the repressor protein from binding to the operator under all circumstances.

What is the independent variable in this experiment? A) temperature B) Number of chirps C) Number of crickets D) Location of the laboratory

The parents of a client with a mental illness being cared for at home tell the nurse that they have been feeling overwhelmed lately. they say, "we need to get away for a few days to recharge ourselves.

Explain how the conversion of wetlands to farmland has impacted streams and rivers.