Why is the ovum larger than the polar bodies

After an egg cell containing 16 chromosomes is fertilized how many chromosomes will be present in the zygote

What process pulls water through the stem of plants

One difference between monotremes and other types of mammals is a) monotremes are viviparous b) monotremes do not secrete milk c) monotremes secrete milk through well-developed nipples d) monotremes secrete milk through pores on the surface of the

What are two major facets of the relationship between books and television?

Which example illustrates Darwin's main contribution to the theory of evolution? An agricultural pest has been exposed to a pesticide that wipes out the entire species.

A punnet square predicts a 9:3:3:1 ratio for phenotypes. Explain what that ratio means ...

What is the meaning of virus?

A 6-year-old boy has marked edema of the legs, accumulation of fluid in the abdomen, and a low blood serum albumin and total serum protein. his urine contains large amounts of protein. what is the most likely cause of edema?

Which of the following would not result in the dilation of the feeder arterioles and opening of the pre capillary sphincter in systemic capillary beds a. a decrease in local tissue O2 content b. an increase in local tissue CO2 c.

Explain how the positions of earth, moon and sun affect the tides