What is a densely coiled chomatin strands

The afrikaners are an example of a founder effect that occurs when a new colony is started by a few members of the original population and the random decrease in genetic variation is an example of

An adult who follows a 2000-kcal healthy u. s.-style eating pattern should consume ounce-equivalents from the protein foods group per day.

Living cells cannot use heat to provide the activation energy for biochemical reactions because which choice(s) complete the sentence correctly? a) answer choice ii. eliminate b) answer choices ii and iv. c) answer choice iii and iv. d) all answers can complete the sentence.