In Mendel's dihybrid cross experiment,what was the phenotype of the $F_1$ generation that was self-pollinated?

In humans,a male produces sperm with genotypes $AB, Ab, aB,$ and $ab$. What would be the genotype of this individual?

In Mendel's pea plants,round seeds $(RR)$ are dominant over wrinkled seeds $(rr)$,and yellow cotyledons $(YY)$ are dominant over green cotyledons $(yy)$. What will be the phenotypic ratio in the $F_2$ generation of a cross between $RRYY$ and $rryy$?

Mendel's Law of Independent Assortment is proven by .....

In a cross between yellow round $(YYRR)$ and green wrinkled $(yyrr)$ pea plants,find out the ratio between seeds having yellow and green seed colour in the $F_{2}$ generation.

$A$ plant with the genotype $AABbCcDD$ is self-pollinated. Assuming independent assortment of the four genes,what will be the proportion of the $AAbbccDD$ genotype in the progeny?