In 1814, a few dozen british colonists founded a settlement on tristan da cunha, which is a group of small islands in the atlantic ocean. one of these individuals carried a recessive allele for retinitis pigmentosa, a retinal degeneration disorder. by the 1960s, the frequency of this allele was ten times higher on tristan da cunha than in the original population. this is an example of which genetic effect?

What role do traits play in affecting an organisms ability to reproduce? finches

Darrel conducted an experiment with the following procedure: fill two cups with ice water. place an uninflated balloon snuggly onto your left index finger. blow a little air into an identical balloon, and place it onto your right index finger. place both fingers into the cups of ice water. darrel noticed that his right finger felt warmer in the ice water than did his left finger. which of the following does the experiment show? a. air is a good radiator of heat. b. air is a good insulator of heat. c. air is a good conductor of heat. d. air is a good convector of heat.

The united states produces an average of 429 billion pounds of food annually. about 133 billion pounds of that food ends up as waste.the percentage of food that the united states wastes each year is %.