DNA Flashcards
genetics unit test
1
Q
what are the three parts that make a nucleotide?
A
- a nitrogenous base (adenine, thymine, guanine, cytosine)
- a sugar
- a phosphate
2
Q
what are the shapes for the nucleotides in a double stranded DNA?
A
nitrogenous base- square
sugar- pentagon
phosphate- circle
3
Q
how do nitrogenous bases pair up
A
A and T
C and G