Will you DarWIN or DarLOSE?
Fitness
The type of bonds that join the bases in DNA.
hydrogen
A mutation in which one base is substituted for another.
Point
These are alternative forms of a gene.
Alleles
What is the first step in performing Punnett square questions?
Do you "Let" statement for the alleles
True or false: Evolution occurs within individuals.
False (it occurs within populations)
The type of sugar found in DNA.
deoxyribose.
The 2 main types of mutations.
Point and frameshift
An observable characteristic or trait.
Phenotype
What you write in the top left corner of your Punnett square
gametes
The mechanism by which evolution occurs and that results in adaptations.
Natural selection.
The 2 molecules that make up the DNA backbone.
Sugar and phosphate
If a mutation occurs in a codon, but the same amino acid produced, what type and subtype of mutation is it?
Point - silent
Chromosomes that contain genes for the same traits but are not identical.
Homologous pairs (or homologous chromosomes)
If a person who is homozygous dominant for a trait is crossed with a person who has a recessive trait, what is the probability that they will have an offspring with the recessive trait?
0%
Adaptation.
If one DNA strand is CTAGTC, the other DNA strand is
GATCAG
If one DNA base is substituted to produce a misshapen protein with one incorrect amino acid, then this is what type of point mutation?
missense
The adjective to describe the genotype "Hh"
heterozygous
If a heterozygote is crossed with a person with a recessive trait, what is the probability they will have an offspring with the dominant trait?
50%
The 3 requirements for natural selection.
1) Natural variation within populations.
2) Traits that are heritable.
3) Differential reproduction.
The unit of DNA, that consists of one sugar, one phosphate, and one base.
nucleotide
Nonsense mutations are characterized by replacing a codon for an amino acid for a __________.
stop codon
Having a genotype with 2 of the same allele (ex. hh or HH)
homozygous
Two individuals who are carriers for a recessive disease are crossed. What is the probability that they will have an offspring with the disease?
25%