Ends hjd Flashcards
Alleles
One form of a gene
Dominant allele
Allele that’s stronger
Recessive allele
Weaker allele
Genotype
Genes of an organism
Phenotype
Visible traits
Homozygous
2 lowercase
Heterozygous
One of each letter
Recessive genetic diseases
Genes pass down a disease
Theory of Evolution
Change and development of species over a lot of time.
Lamarck
Proposed traits develop over an organisms life passed to next generations
Evidence of of evolution
Fossils, Embryology, Structural
Fossils
Preserved the structure
Embryology
Study of embryos
Primates
Share characteristics
Hominids
Human live primates
Homo habilis
Handy man
Homo sapien
Short, heavy
Neanderthals
Direct ancestors
Different ways organisms become fossilized
Mineral replacement, carbon films, coal, molds and casts, original remains, trace fossils
Eons
Longest
Eras
Next longest
Periods
Division’s within era
Epochs
Shortest
Precambrian
4.6 billion-54.1 million
Paleozoic
544.1 million-252 million, Pangea formed, first bacteria
Mesozoic
252 million - 66 million, first bird and mammals, and dinos
Cenozoic
Current era, 2 % earth history