Two parents, each with TT gene alleles, are true breeding and are crossed. Which alleles will their offspring have? A. tt B. Tt C. tT D. TT

Alpha Centauri B is a star that is about the same size as the Sun. Why does it appear much smaller and dimmer than the Sun when seen from Earth? A) It is cooler than the Sun. B) It has less energy than the Sun.

What structures are present in both gymnosperms and angiosperms but absent in both bryophytes and ferns?

For practice, type in the name of the set of positions occupied by the three oxygen atoms:

The type of water has no affect on a freshwater ecosystem. t or f

What is active transport

How does a virus cause disease?

Excretion of wastes is important to maintaining homeostasis. which three are involved in the excretion of wastes in humans? A. Urinary, skeletal, reproductive B. Circulatory, integumentary, Muscular C. Digestive, respiratory, urinary d.

How can we predict which elements are stable under natural conditions and which elements tend to undergo chemical reactions

Homologous sequences: A. are expected to have very similar sequences in related organisms B. are expected to have similar sequences in related proteins but from unrelated or distantly related organisms C.

What is the result of meiosis I and are the chromosomes replicated or unreplicated?