vocab Flashcards
(12 cards)
Pretest Vocab
a feature of an organism
(t)
trait
Pretest Vocab
a unit of genetic information
gene
Pretest Vocab
molecule contain genetic info
DNA
Pretest Vocab
Passing down of trait via genes from one generation to next
inheritance
1.1 Variation
a feature gained during an individual’s lifetime
acquired trait
1.1
a feature passed down by genes from one gen to the other
genetic trait
1.1
Small random changes in the DNA
mutation
1.1
any change in the genetic traits in a population (of the same species) over many generations
evolution
The amount of genetic variation in a population is
gd
genetic diversity
(assists survival of species
The survival of organisms that are better adapted to their environment
ns
natural selection
survival of organism, better adapted to environment
Natural selection is the survival of organisms that are better adapted to their environment through selectively reproducing changes in its genotype.
Any challenge that affects an organism’s ability to survive in a particular environment is called a
sp
selection pressure
5 main factors
predators, access to resources (food,shelter,territory,mates), environment factors(temp,weather), human, vulnerability to disease
measure of how common a particular trait is
frequency
