$A$ human male produces sperms with the genotypes $AB, Ab, aB,$ and $ab$ pertaining to two diallelic characters in equal proportions. What is the corresponding genotype of this person?

In humans, brown eyes $(B)$ are dominant over blue $(b)$ and dark hair $(D)$ are dominant over red hair $(d)$. A man with brown eyes and red hair marries a woman with blue eyes and dark hair. They have two children; one resembles the man (brown eyes, red hair), and the other resembles the woman (blue eyes, dark hair). What are the genotypes of the man and the woman?

When a dwarf plant with terminal flowers is crossed with a tall plant with axial flowers,what will be the proportion of dwarf plant progeny in the $F_1$ generation (in $\%$)?

Which law is demonstrated by Mendel's dihybrid cross?

The following cross,$YyRr \times yyrr$ in garden pea plant,would result in the formation of

What type of gametes will be formed by the genotype $RrYy$?