Question

types of twins ??
various dieseases due to abnormality in human body?
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Answer 1

There are two types of twins – identical (monozygotic) and fraternal (dizygotic). To form identical twins, one fertilised egg (ovum) splits and develops two babies with exactly the same genetic information.

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Answer 2

Answer:

Monozygotic and dizygotic twins

Explanation:

Twins are two offspring produced by the same pregnancy. Twins can be either monozygotic ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or dizygotic ('fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell.

Diseases due to abnormalities in children:

• chromosome abnormalities (such as Down syndrome)
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.heart defects.
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.heart defects.mental retardation.
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.heart defects.mental retardation.neural tube defects.
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.heart defects.mental retardation.neural tube defects.short stature.
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.heart defects.mental retardation.neural tube defects.short stature.single gene defects (such as cystic fibrosis or PKU)
• chromosome abnormalities (such as Down syndrome)cleft lip/palate.heart defects.mental retardation.neural tube defects.short stature.single gene defects (such as cystic fibrosis or PKU)hearing or visual impairments.