The idea that speciation occurs in bursts, between long periods of genetic equilibrium is called -

a. punctuated equilibrium.

b. stabilizing selection.

c. genetic drift.

d. gradualism.

How do lipids and carbohydrates differ in ATP

20 ecological instruments

The energy needs of a human population are not affected by the__.

What is the best way to study the environment.

After an RNA molecule is transcribed from a eukaryotic gene, what are removed and what are spliced together to produce an mRNA molecule with a continuous coding sequence?

In snapdragons, red flower color (R) is incompletely dominant to white (r), with heterozygous plants being pink. The broad-leaf allele (B) is incompletely dominant over narrow leaves (b), with the heterozygous plants having medium-width leaves.

Carol eats 800 kilocalories a day to lose weight. She is 60 years old. Carol has been walking briskly 60 minutes daily for the past 2 months.

Distinguish between anaerobic and aerobic cell respiration in eukaryotes.

What change would most likely decrease the competition of food among a chipmunk population in an ecosystem?

How much energy do consumers obtain when they eat