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

Usually it is not possible to penetrate inside a body cavity without cutting through protective tissues. However, sperm reach the egg via the vagina, uterus, and fallopian tubes (oviducts).

Two parents are carriers for an autosomal genetic disorder. what is the chance that the couple will have a child that expresses the disorder? A. 100% B. 25% C. 75% D. 50%

Write the 3 domains of lie?

Which statement best describes enzymes? (1) Every enzyme controls many different reactions. (2) The rate of activity of an enzyme might change as pH changes. (3) Temperature changes do not affect enzymes.

Explain how mitotic recombination leads to the mosaic condition termed twin spots.

Which organisms have groups of cells arranged into organs

Who are indian here?

Explain why the direction along which the electromagnetic wave travels is not the same as the direction along which the changing electric field is applied.

Which organisms transform nitrogen to a form that is useful to plants? bacteria animals algae humans

Explain how a shortage of water affects the health of your cells.