genetics Flashcards
genetics
Genetics is a branch of biology concerned with the study of genes,
heredity
Heredity, also called inheritance or biological inheritance is the passing on of traits from parents to their offspring
inheritance
Inheritance is the practice of passing on property, titles, debts, rights, and obligations upon the death of an individual
dominant
a dominant trait or gene.
recessive
a recessive trait or gene.
allele
An allele is a variant form of a given gene
DNA
deoxyribonucleic acid
deoxyribonucleic acid
A self-replicating material that is present in all living matter, contains genetic information
nucleotides
one of the structural components, or building blocks. consists of a base (adenine, thymine, guanine, cytosine) plus a molecule of sugar and one phosphoric acid
base pairing
two complementary nitrogenous molecules that are connected by hydrogen bonds.
chargaff’s rule
guanine bonds with cytosine, thymine bonds with adenine
nucleic acid
a complex organic substance present in living cells
nitrogenous base
a nitrogenous base is simply a nitrogen-containing molecule that has the same chemical properties as a base.
base-pairing rule
states that adenine (A) bonds with thymine (T) and that guanine (G) bonds with cytosine (A)
double helix
the structures formed by double-stranded molecules of nucleic acids such as DNA