What is the phenotypic ratio of a single pair of contrasting traits in the $F_2$ generation of a dihybrid cross?

In humans,blue eye color is recessive to brown eye color. If a blue-eyed woman marries a brown-eyed man whose mother had blue eyes,what will be the expected eye color of their children?

In a cross between $AaBB$ and $aaBB$,what will be the ratio of the genotypes $AaBB$ and $aaBB$ in the progeny?

$A$ cross between two homozygous parents that differ in only one gene locus is known as a....

From a cross $Aa BB \times aa BB$,what genotypic ratio will be obtained in the $F_1$ generation?

In a Mendelian monohybrid cross,the phenotypic ratio in the $F_2$ generation is $3:1$. How many types of gametes are formed in the $F_1$ generation?