What is purebred breeding? A: A form of Straight Breeding with related animals?
B: A form of straight breeding with non-related animals
C: A form of straight breeding with registered animals
D: A form of straight breeding with grade females and purebred sires.

The diagram shows a fossil of an ancient whale skull and a skull of a present-day whale. the ancient whale is extinct and is believed to be an ancestor of the present-day whale. what do these skulls most likely show that supports darwin’s theory of evolution? all populations can adapt and survive. only some organisms have a common ancestor. populations change slowly over time. populations rapidly become extinct.

Which statement correctly describes a way that mutations increase the likelihood that a species will survive in a changing environment

1. which of the following transport mechanisms utilizes energy? a. osmosis b. diffusion c. facilitated diffusion d. endocytosis