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Nucleotide & DNA

Biology Vocab Flashcards

TermDefinition
Adenine a nitrogen base that pairs with thymine and is a purine
Complementary Strand nitrogen base pairings
Cytosine a nitrogen base that pairs with guanine and is a pyrimidine
DNA Helicase the enzyme that unzips the double helix
DNA Polymerase the enzyme that adds nucleotides to build a new DNA strand
Guanine a nitrogen base that pairs with cytosine and is a purine
Lagging Strand the strand of DNA that breaks and become fragments
Leading Strand the strand of DNA that replicates and is whole
Thymine a nitrogen base that pairs with adenine and is pyrimidine
Hydrogen Bonds the weak bonds that connect nucleotides (A&T have 2 bonds and C&G have 3 bonds)
Alleles the part of a chromosome that is different and comes from crossing over
Diploid a cell that has 46 chromatids
Haploid a cell that has 23 chromatids
Law of Segregation the principle that the 2 alleles for a trait separates during gamete formation
Independent Assortment a genetic principle where alleles for different genes separate randomly and independently
Purines purines have 2 rings
Pyrimidines pyrimidines have 1 ring
Created by: stu.dreyes06
 

 



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