topic 7 - genetics and populations Flashcards
1
Q
what is a gene?
A
a sequences of DNA bases that code for proteins and result in characteristics.
2
Q
what are different versions of similar genes called?
A
alleles.
3
Q
what does it mean to be a diploid organism?
A
when an organism has 2 copies of the same chromosome.
4
Q
what is a heterozygous genotype?
A
when an organism has 2 different alleles.
5
Q
what is a homozygous genotype?
A
when an organism has the same alleles.
6
Q
what does it mean when gametes are haploid?
A
they contain a single allele for each gene.
7
Q
what do monohybrid crosses show?
A
the likelihood of different alleles being inherited by offspring from their parents.
8
Q
what is the inheritance of 2 characteristics called?
A
dihybrid inheritance.
