When a heterozygous dominant is crossed with a homozygous recessive,the ratio of the progeny will be:

If a cross is made between $AA$ and $aa$,the nature of ${F_1}$ progeny will be

$A$ true-breeding plant producing red flowers is crossed with a pure-breeding plant producing white flowers. The allele for the red color of the flower is dominant. After selfing the plants of the first filial $(F_1)$ generation, the proportion of plants producing red and white flowers in the progeny would be:

In a plant,black seed color $(BB / Bb)$ is dominant over white seed color $(bb)$. In order to find out the genotype of the black seed plant,with which of the following genotype will you cross it?

The crossing of a homozygous tall plant with a dwarf plant in the $F_2$ generation would yield plants in which ratio?

In a cross,$45$ tall and $15$ dwarf plants are produced. The genotype of the parents is .....