What is the nitrogenous base found in dna and rna; pairs with guanine select one:

a. thymine

b. cytosine

c. guanine

d. adenine?

Cell differentiation always involves a. transcription of the myoD gene. b. the movement of cells. c. the production of tissue-specific proteins. d. the selective loss of certain genes from the genome.

White moths were found in huge numbers in the city of birmingham. These could be easily camouflaged by the trees. Because of sudden industrail development, the trees in the city were covered with soot.

Explain the benefits of animals working together in groups.

In which part of the world is an equinox most different from other days of the year

Glucocorticoids have no effect on clock gene expression in the liver, heart, and kidney. a. true b. false

According to some scientists, which is a cause of global warming?

What microscope do scientist use to look at internal parts of a cell

How did the disappearance of trees lead to cannibalism on easter island

During which phase of mitosis do chromosomes line up at the spindle equator? Group of answer choices prophase metaphase telophase anaphase

What molecule is created when 4 hydrogen atoms bind with oxygen and 4 electrons