When normal and mutant alleles are present on opposite chromosomes of homologous pair, the heterozygotes are called as

Carrier organism refers to an individual, which carries a

What will be possible blood group in children from the parents with $B$ and $AB$ blood groups?

$9 : 3 : 3 : 1$ ratio is modified to $9 : 7$ ratio due to

Heterozygous round and yellow seeded pea plants were selfed and total $800$ seeds are collected. What is the total number of seeds with first dominant and second recessive traits?