natural selection Flashcards
DNA
a molecule that is present in all living cells and that contains the information that determines the traits that living thing inherits the need to live
Nucleotide
in a nucleic-acid chain a subunit that consists of a sugar a phosphate and a nitrogenous base
Chargaff’s Rule
It states DNA from any cell of all organisms should have a 1:1 ratio
Watson and Crick
In 1953 Watson and Crick discovered the double helix , the twisted ladder structure
Rosalind Franklin
She was a English chemist who made contributions to the understanding of the molecular structures of DNA
Mutations
A change in the nucleotide-base sequence of a gene or DNA molecule
Adaption
a characteristic that improves an individual’s ability to survive and reproduce in a particular environment
Species
a group of organisms that are closely related and can mate to produce fertile offspring
Evolution
the process in which inherited characteristics within a population change over generations such that new species sometimes arise
fossils
the remains of a prehistoric creature
fossil record
refered to as total number of fossil found
Charles Darwin
he is famous for his work on the theory of evolution
trait
genetically determined characteristic
selective breeding
where human use plants and animals for selective particular phenotypic traits
natural selection
different survival and reproduction
