Some of ${\mathrm{F}}_2$ progeny are formed during dihybrid cross between round and yellow $\left(\stackrel{\uparrow }{\mathrm{o}}\right)$ and wrinkled and green $\left(\stackrel{\circ }{+}\right)$ pea plants. Their genotypes are:

A round seeded tall pea plant is crossed with round seeded dwarf plant and obtained progeny are with following phenotypes
$3$ - Tall, Round
$3$ - Dwarf, Round
$1$ - Tall, Wrinkled
$1$ - Dwarf, Wrinkled

The possible genotype of parents:

In mice black coat color (allele $\text{'}\mathrm{B}\text{'}$) is dominant to brown coat color (allele$\text{'}\mathrm{b}\text{'}$). The offspring of a cross between a black mouse $\left(\mathrm{BB}\right)$ and a brown mouse$\left(\mathrm{bb}\right)$ were allowed to interbreed. What percentage of the progeny would have black coats ?