How many types of gametes are produced by a plant with the genotype $Rryy$?

In pea plants,yellow seeds are dominant over green seeds. If a heterozygous yellow-seeded plant is crossed with a green-seeded plant,what will be the expected ratio of yellow to green-seeded plants in the $F_1$ generation?

If a homozygous red-flowered plant (dominant) is crossed with a white-flowered plant (recessive),the offspring will be:

When different alleles of the same gene are present in an individual,the individual is a

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?

If a heterozygous tall plant is crossed with a homozygous dwarf plant,what will be the percentage of dwarfness in the progeny (in $\%$)?