Natural Selection Flashcards
DNA
deoxyribonucleic acid a molecule that is present in all living cells and that contains the information that determines the traits that a living thing inherits and needs to live.
Nucleotide
in a nucleic acid chain a subunit that consists of a sugar a phosphate and a nitrogenous base
Chargaff’s Rules
He found out that the amount of adenine in DNA always equals the amount of cytosine
Watson and Crick
They figured out that DNA is a long twisted ladder.
Rosalind Frainklin
He was a chemist that was able to make images of DNA molecules.
Mutations
a change in that 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 or physical evidence of an organism preserved by geological process
Fossil Record
a historical sequence of life indicated by fossils found in layers of the Earth’s crust
Darwin
He earned a degree in theology and he was most into the study of plants and animals.
Trait
A genetically determined charcteristic.
Selective Breeding
the human practice of breeding animals or plants that have certain desired characteristics.
Natural Selection
the process by which individuals that are better adapted to their environment survive and reproduce more successfully that less well adapted individuals do a theory to explain the mechanism of evolution.
