Question

Mention two dominant and two recessive traits of garden pea.

Answer 1

Recessive trait:

• The recessive trait is coded by a recessive allele.
• The recessive trait is expressed only under the homozygous condition which is when two recessive alleles coding for the same trait come together.

Dominant trait:

• The dominant trait is coded by a dominant allele.
• The dominant allele is expressed irrespective of the presence of another allele. This means this allele expresses itself even when another allele is either dominant or recessive. It means dominant allele is expressed under both homozygous and heterozygous condition.

Examples of traits in garden pea:

Characteristic	Dominant trait	Recessive trait
Height of the plant	Tall	Dwarf
Color of the seed	Yellow	Green

• The garden pea was used by Mendel for his study.
• The true-breeding plants were selected as parents in these experiments where two contrasting traits of seven characteristics were studied.