Class 10 Science Biology Heredity and Evolution
An offspring of two homozygous parents differing from one another by alleles for one gene is  
(a)
Back cross
(b)
Monohybrid
(c)
Dihybrid
(d)
Trihybrid
Correct answer: (b) 
Solution: A cross between two dominant and recessive homozygous parents produces a hybrid offspring that has both dominant and recessive allele for one gene. Since the offspring is heterozygous for one gene, it is called as monohybrid. Correct answer is B.

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components of food
why do we fall ill
heredity and evolution
diversity in living organism
heredity and evolutio