dna Flashcards
a molecule that is present in all living cells and that countains the information that determines the traits that a living thing inherits and needs to live
DNA
in a nucleic acid chain a subunit that consits of
sugar, phosphate and nitrogenous
Nucleotide
it states that any cells should have a 1:1 ratio
chargaffs rules
they discovered the double helix
watson and crick
he made diffraction images made by directing x rays at DBA
rosalind franklin
a change in the nucleotide base sequence of a gene or dna molecule
mutations
charisticks and reproduce improves an indivaduals ability to survive
adaption
group of organisms that are closely related and can mate to prouduce fertile offsprings
species
changes over generations
evolution
bones from animals also known as remains
fossils
historical sequence of life indicated by fossils found in layers of earths crust
fossil record
he developed the natural selection
Charles Darwin
a distinguishing quality characteristic
trait
specifically developing characteristics
selective breading
were the smater, stronger and bigger tend to survive and repurduce
natural selection
