Biology - Genetics - 3.6 - Punnett Squares
Punnett square
A ____ can be used to determine a missing genotype.
dihybrid
A cross between individuals that have different alleles for the same gene; A hybrid that is heterozygous for alleles of two different genes.
4
An individual with two genes each having two alleles, an individual has ____ alleles.
homozygous
An organism that has two identical alleles for a trait
genotype
An organism's basic makeup, or allele combinations.
homozygous dominant
Both alleles (factors) for a trait are the same and dominant (AA)
homozygous recessive
Both alleles (factors) for a trait are the same and recessive (aa)
homos
Greek for "same".
di
Greek prefix for two, twice, or double
heter or hetero
Greek word that means: "other" or "different"
16
How many different combinations can 4 alleles result in?
allele
One of a number of different forms of a gene
on the side of the chart
The gametes produced by the female parent are ____ of the Punnett Square
at the top of the chart
The gametes produced by the male parent are ____ of the Punnett Square
phenotype
The physical characteristics of an organism; Visible traits;
A Punnett square can be used to determine a missing genotype based on the other genotypes involved in a cross.
Write this sentence: A Punnett square can be used to determine a missing ____ based on the ____ ____ involved in a ____.
Punnett square
You can predict the percentages of phenotypes in the offspring of a cross from their genotypes by using a ____.
Punnett square
a chart that allows you to easily determine the expected percentage of different genotypes in the offspring of two parents
heterozygous
having two different alleles for a trait
gametes
reproductive cells