In humans, gender is determined by the 23rd pair of chromosomes. xx results in females, whereas xy results in males. what fraction of a male's sperm would be expected to bear an x chromosome?

Which is the best resource for advice about a relationship problem that is affecting your health. A : a religious counselor or leader B : an older and experienced teen C : a trusted friend of the same age D : an ex-romantic partner

Polypeptides are composed of many

Which of the following statements regarding the moon and Earth is correct? A. Earth and the moon are nearly the same age. B. Earth is tidally locked, while the moon spins on its axis. C.

On land, the adult frog has pulmonary respiration only.

An error occurs when the dna of cell is copied. However, the cell does not did divide after the error is detected which statement best describe the cell cycle for this cell

Fevers are caused by: a. Fibrinogen acting on the fever tissues b. Fibrinogen acting on the hypothalamus c. Pyrogen acting on the fever tissuesd. Pyrogen acting on the hypothalamus

At a plate boundary where two thick plate edges of continental crust are coming together, what kind of formations might you eventually see on Earth's surface?

Which is an example of clones that already are produced by nature?

How do different spheres of earth interact?

What are 3 important trends in our solar system?