A dependent variable is: A. Changed to test a hypothesis.
B. Measured to show the effect of a change.
C. Kep the same to make an experiment a fair test.
C
D. Collected to draw conclusions.

Crossing over is a method of (blank)?

Which genetic disorders, caused by an extra x chromosome (xxy), is characterized by a lack of testicular development in males, effeminate features, possible mental impairment, and a thin stature?

What will happen if two of the base pairs of the stand of the dna are switched