Which statement is true of crossing over

A - what occurs during prophase of mitosis

B - it allows for genetic variation

C-it occurs only in animals

Why is the probability that an offspring will have round seeds 50%

What ocurrs in an updraft

Using forceps and scissors cut a small piece of liver and add it to the test tube. Push it into the hydrogen peroxide with a stirring rod. Observe the bubbles. What gas is being released?

Which of these actions happens during transcription?

A feedback system controls the menstrual cycle. How does a female resp when the luteinizing hormone level drops sharply? O A. Her progesterone level drops sharply. B. She ovulates. C. She menstruates. D. Her estrogen level drops sharply.

Genetic engineering to create biomedical products that benefit society often involves of recombinant DNA technology. Recombinant DNA is DNA that has?

What is biology and name all the branches of biology that you know?

How Does crossing-over leads to greater variability of phenotypes?

After several miles of running and sprinting in intervals, the runner's muscles ache and feel fatigued. Which is the best explanation for what has occurred?

Which piece of lab equipment is used to measure the mass of a chemical sample?