Which is true about adaptations?

A. They are acquired during an organism's lifetime.

B. They are learned from other organisms.

C. They are lost during an animal's life.

D. They are genetically acquired traits.

The only people that share 100 percent of their genes with one another are

What's the difference between a single cell Euglena and multicellular human even though they carry the same life process

How can the fossil record provide evidence for evolutionary relationships?

What happens when an antibody binds an antigen? A) It increases body temperature. B) It causes pathogens to stick together. C) It starts the inflammatory response. D) It produces cytotoxic T cells.

Humans have 23 pairs of chromosomes. in a karyotype, the two chromosomes of each pair are lined up together and sorted from 1 to 23. the 23rd pair of chromosomes are not homologous. these chromosomes are called the?

What is a type of research that involves observation and collecting data but does not include control

Forms of the Ras protein found in tumors usually cause which of the following? A) DNA replication to stop B) DNA replication to be hyperactive C) cell-to-cell adhesion to be nonfunctional D) cell division to cease E) growth factor signaling to be

Which property of nervous tissue is fundamental to its function of coordinating the body's activities? O cells that are tightly packed contains extracellular matrix presence of neurons short life span

Polydactylism is a dominant trait that results in extra fingers and toes in humans. A polydactyl man marries a woman with 10 fingers and toes. They have a child that has a normal number of digits.

Why are some sediments smaller than others