On a phylogenetic tree, what do the branch lengths represent?

The age of the organisms

amount of genetic change since divergence

amount of genetic change since convergence

The age of divergence

Which of the following sex and generation combinations directly produces the pollen tube of angiosperms? A) male gametophyteB) female gametophyteC) male sporophyteD) female sporophyte

What are 3 examples of cells that would undergo mitosis?

Most rock gypsum is formed by what?

Humans and chimpanzees have only a few genes in common. a. True b. False

How can marker analysis determine which hla alleles are present?

What is the number of chromosomes in body cells, if in germ cells that number is n?

The more intense your workout, the more your body relies on carbohydrates to fuel it. Duration and intensity affect the degree to which carbohydrates and fat contribute to overall energy production.

Using a broom to clean sidewalks and driveways is a way to reduce water pollution

The model shows two types of proteins, channels and carriers, allowing the movement of molecules into the cell.

Temperature, pH, and ionic concentrations each play an important role in the proper functioning of enzymes.