GENETICS AND EVOLUTION
GENETIC BASIS OF INHERITANCE
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
homozygous dominant
|
|
|
homozygous recessive
|
|
|
heterozygous
|
|
|
None of the above
|
Detailed explanation-1: -Homozygous and heterozygous are terms that are used to describe allele pairs. Individuals carrying two identical alleles (RR or rr) are known as homozygous. While individual organisms bearing different alleles (Rr) are known as heterozygous.
Detailed explanation-2: -∙Therefore, the offspring containing the genotype (Rr) will be red in colour.
Detailed explanation-3: -The genotype of these monohybrid, or heterozygous, plants can be represented as genotype Aa, with the uppercase letter representing the dominant allele and the lowercase letter representing the recessive allele. The F1 hybrid plants were next self-fertilized (Aa×Aa) and this cross is known as a monohybrid cross.
Detailed explanation-4: -The heterozygous genotype (Rr) has the dominant round seed shape as its recessive allele (r) is masked in the phenotype.