A lentil with spotted seeds crossed with another that had dotted seeds. The F1 plants turned out to have seeds that had spots and dots. What could be the reason

Which of the following factors are involved in the formation of a new species? a. behavioral isolation, geographic isolation, and temporal isolation b. relative dating, index fossils, and radioactive dating c.

In an earthworm nerve impulse transmission experiment, students were asked to test the inhibitory effects of some unknown compounds. Upon the addition the students observed that there was no action potential generation at all.

Explain how the Earth is tilted during the spring and fall equinoxes.

What form of RNA carries instructions from the nucleus to the ribosome?

Which was charles darwin contribution to the study of biology?

The concentration of an acid or base refers to the amount of acid or base dissolved in solution. A. True B. False

Tissues in the ___ system secrete mucous as part of the first line of defense

Sea anemones trying to occupy the same territory in a tide pool. What type of interaction, predation, competition, mutualism, parasitism, or commensalism?

Assuming the carbon cycle is a closed system, which of the following statements is true?

Which two actioms happens when bonds in ATP moecules are broken