Question

Mother gives birth to a baby but the baby has characters of bothparents. How is this possible?NCERT Class VIIIScience - Exemplar ProblemsChapter 9. Reproduction in Animals

Answer 1

A baby is formed from embryo which is the result of fusion of sperm from father and ova of mother hence in a newborn baby half set of chromosome are from father and other half from mother hence it shows both of their characteristics.

Answer 2

$\huge\bold\purple{Answer - }$

Although mother gives birth to a child, fertilization involves two gametes,one from mother and other from father.The zygote, therefore has both father and mother's contribution. Since the zygote develops into the baby it has characters of both parents.

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$\huge\bold\green {Additionally -}$

• The fusion of a male gamete and a female gamete to form zygote is called fertilization.

• Nuclei of sperm and egg contain chromosomes which carry genes and transmit the characteristics to the offspring.

• The period taken by the baby to development from the day zygote is formed till birth is called gestation period.

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