lesson 1
early study of evolution
early study of evolution
What is a Genotype
genetic makeup of an organism
What is a chromosome
a thread-like structure in plants and animals
adaptations and variations show evidence of past
evolution
a female human has ____ chromosomes
2 X chromosomes
What is a protein
building blocks of life
Does an allele of Tt override an allele of tt
Yes cause it has a dominant allele
How many chromosomes does a human have
46 total in 23 pairs
helpful variations may _____________ in a population while unfavorable ones may disapear.
accumulate
What are fossils
preserved remains of an organism
How are proteins made
amino acids stinged into a specific way
How does probability help scientists predict what genotypes or phenotypes the organism might have
It helps determine if, for example, the organism will have red fur instead of black fur
How does the cell cycle help an organism
allows an organism to reproduce and grow, and repair damaged tissues
because they create multiple alleles, mutations can cause
variotions in traits
What are some extinct creatures
dinosaurs, woolly mammoths, dodo birds
Evolution results from changes in
genetic material
Do ALL organisms change over time
yes
What is DNA
Hereditary material inside all organisms
who made the first attempt at developing a theory of evolution
darwin
fossil record
A collection of all discovered fossils
what are some animals that have drastically changed by evolution
whales, dolphins
How are some ways an organism might change
DNA Mutations, and Natural Selection
How does a pedigree help geneticists
helps them map out the inheritance of traits
an organism with high fitness is more likely to
coevolve and reproduce
How are some fossils preserved
bones are turned into solid rock and preserved commonly by tree resin
why is evolution important to discovering the past
it can show us where we came from and how orginisma originated