vocab Flashcards
DNA
a molecule that is present in living cells and that contains the info
Nucleotide
in a nucliec-acid chain, a subunit that conists of a suger,
a phosphate and a nitrogenous base
Chargaff’s Rules
that animals came from other animals
Watson and Crick
.
Rosalind Franklin
.
Mutations
a change in the nucleotide-base sequence of a gene
or DNA molecule
Adaptation
a charaistics that improves indivalual’s ability to survive and reproduce in a particalar enviroment
Species
a group of organisms that are closly related and can
mate to produce fertile offspring
Evolution
the process in which inherited charaistics whithen population change over generations such that new species sometimes arise
Fossils
the remains or phisical of an organism preserved by
geological prosses
Fossil Record
a historic squence of life idecated by by fossils found in the earth’s crust
Darwin
a
Trait
a genteticaly determind charaistics
Selective Breeding
the human practice of or plants that have sertan defined charastics
Natural Selection
Indaviuals who survive and have adapted reproduce
Generation Time
the period between the birth of 1 generation and the birth of the next generation
Speciation
the formation of new spieces as a result of evoltion
Primates
a type of mamal characterized bu accible thumbs and binoclar vision
Hominid
a type of prime mate by bipedalism
Homo sapiens
the spieces of homosides that includes modren humans
and their closest ansestors and that first appeared about 100,000 to 150,00 years ago
