Several experiments were required to demonstrate how traits are inherited

Which scientist or team of scientists first demonstrated that cells contain some component that can be transferred to a new population of cells and permanently cause changes in the new cells?
(a) Griffith
(b) Watson and Crick
(c) Avery, MacLeod, and McCarty
(d) Hershey and Chase


(a)

Biology & Microbiology

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Which is not a density-dependent, growth-limiting factor?

a. predation b. drought c. parasitism d. competition e. disease

Biology & Microbiology

Elucidation of the histone code might  

A.  allow us to turn specific genes on or off. B.  allow the determination of nucleosome composition. C.  lead to chromatin remodeling. D.  allow us to control translation.

Biology & Microbiology

Which of the following animals would have access to the most oxygen in its environment?

a. a termite living in its underground nest b. a snow leopard living high in the Himalayan mountains c. a zebra living close to sea level d. a deep-sea ray

Biology & Microbiology

This is an example of _____

1.energy, the capacity to do work 2.activation energy supplied by CO2 3.the effect of temperature and pH on a reaction 4.an electron transfer chain

Biology & Microbiology