7. True or false? A flood that separates a population of frogs onto opposite sides of a lake is an example of a vicariance event that may result in allopatric speciation

a. true

b. false

Does the amount of available energy decrease going down the energy pyramid?

Which portion of the lobes of the thymus gland contains lymphoid stem cells that divide rapidly, producing daughter cells that mature into T cells and migrate into the medulla?

Which of the following is responsible for sending flavor messages to the brain? the tongue the papillae the taste receptors the taste buds

Sarah can't curl her tongue - which is a recessive trait. Both of her parents can curl their tongues - which is dominant. Give the genotypes of all persons involved (use T and/or t in the genotypes).

The food oyramid suggest that a healthy diet consist of a large portion of cheese, butter, olive oil, or breads

Which statement is true about the scientific method

what would most likely happen to a person who had a shortage of lactase?

Which mature seed (eudicot or monocot) lacks an endosperm? What happened to it? (Hint: think about the cotyledons)

What is the likely mechanism of inheritance for a character with a large range of phenotypes?

An object weighs 100 lb. on the surface of the earth. How much does it weigh 4R from the surface? (5R from the center)