Determine the number of possible gametes produced from an organism with the genotype $RrYy$.

$A$ human male is heterozygous for autosomal genes $A$ and $B$ and is also hemophilic (gene $h$). What proportion of his sperm will contain the $abh$ gene combination?

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

$A$ human male produces four types of gametes $AB, Ab, aB,$ and $ab$ in equal proportions. What is the corresponding genotype of this individual?

How many pairs of chromosomes are involved in Mendelian dihybrid crosses and dihybrid crosses with linkage,respectively?

In Mendel's dihybrid cross,what is the ratio of offspring possessing homozygous dominant and homozygous recessive genotypes in the $F_2$ generation,which shows a phenotypic ratio of $9:3:3:1$?