Punnett Squares
This is the name of an AA gene
A dominant gene
Different forms of a gene
An allele
Which type of trait is usually shown with a capital letter?
Dominant allele
Which term describes what an organism looks like?
Phenotype
Who is known as the “Father of Genetics”?
Gregor Mendel
When AA and aa alleles cross, this is the biggest genotype possibility
Heterozygous (Aa)
What is the term for an organism's genetic makeup?
A genotype
If an organism has a dominant allele and a recessive, which trait is exposed?
The dominant allele
What genotype would represent a homozygous recessive trait?
Two lowercase letters (bb)
What organism did Gregor Mendel study to discover inheritance patterns?
Pea plants
Another name for heterozygous alleles
A carrier
What word describes a trait that is covered by another trait?
Recessive allele
What must an organism's alleles be for a recessive trait to appear?
Homozygous recessive
Can two organisms have the same phenotype but different genotypes? (Yes or No)
Yes
What is the probability (in percent) of flipping heads on a fair coin?
50%
What word describes a trait that has 2 of the same alleles
Homozygous recessive/dominant
What is an organism called with a recessive and dominant alleles for a trait?
Heterozygous
What is the chance of homozygous dominant if aa and aa alleles are mixed?
0%
What genotype(s) can produce a dominant phenotype?
Homozygous dominant or heterozygous alleles
In a Bb × Bb cross, what fraction of offspring are expected to show the recessive trait?
1/4
A man with cystic fibrosis has a child with a woman who is a carrier, what is the chance for the child to have cystic fibrosis?
1/2 (50%)
What is the term for an organism that has 2 identical alleles?
Homozygous
If a trait is recessive, how many recessive alleles are needed for it to appear in the phenotype?
Two
Why can a heterozygous organism show the same phenotype as a homozygous dominant organism?
Because the dominant allele masks the recessive allele
Mendel’s Law of Segregation states that allele pairs separate during the formation of what?
Gametes