Answer:
1. Allele
2. Dominant
3. Genotype
4. Recessive
Step-by-step explanation:
Alleles are different variations of a gene. An allele can be dominant or recessive.
A dominant allele is usually denoted with upper case letter such as T, F, W, R, while a recessive allele is usually denoted by lower case letter such as t, f , w, r.
A genotype is a pair of gene that controls a particular trait in an organism. The pair is usually inherited from the parents: one from the month and one from the father. A genotype can appear as two dominant alleles, two recessive alleles or one dominant allele and one recessive allele. This means that a genotype can be written as a him dominant such as FF, a homozygous recessive such as ff and a heterozygous pair such as Ff.