In a human, how many chromosomes are present in a cell before it undergoes mitosis and meiosis?

Describe how evolution changes the relative frequency of alleles in a gene pool. Why does this happen?

Runners who drink too much water before a marathon run a risk of water intoxication, also known as

Which of the following does not accurately describe movement within plants? A. Changes in the concentration of nutrients affect the cause of movement of fluid through phloem. B.

What weather whole create the weakest waves a. weak winds that blow for long periods of time with a long fetch. b. strong winds that have been blowing for a long time with a long fetch. c.

You can eat as many empty calories as you want during the day because they do not count towards your daily totals. a. True b. False

Where did pompeii worms get their names from

When you scratch a mosquito bite, you damage some cells. Damaged cells release histamine, which causes localized swelling. The swelling can crush cells, causing them to release more histamine. This is an example of

With respect to the overwhelming similarity in behavior between males and females, how many PAIRS of chromosomes are unisex (seen in both males and females) ?

Which of these habitats has a high salinity? O A. River B. Stream c. Lake D. Ocean

Which statement describes a property shared by lipids and carbohydrates