NEET BIOLOGY

Detailed explanation-1: -Each cell in your body usually contains 23 pairs of chromosomes, which carry the genes you inherit from your parents. A baby with Edwards’ syndrome has 3 copies of chromosome number 18 instead of 2. This affects the way the baby grows and develops.

Detailed explanation-2: -Triple X syndrome is also called 47, XXX syndrome because the extra X chromosome results in 47 chromosomes in each cell instead of the usual 46.

Detailed explanation-3: -This means they have 47 chromosomes instead of 46. Down syndrome, Edward syndrome and Patau syndrome are the most common forms of trisomy. Children affected by trisomy usually have a range of birth anomalies, including delayed development and intellectual disabilities.

Detailed explanation-4: -Also known as Down syndrome, trisomy 21 is a genetic condition caused by an extra chromosome. Most babies inherit 23 chromosomes from each parent, for a total of 46 chromosomes. Babies with Down syndrome however, end up with three chromosomes at position 21, instead of the usual pair.

Detailed explanation-5: -If a baby has Edwards’ syndrome, they have inherited an extra copy of chromosome 18. This extra copy can be present in some or all of the baby’s cells and can lead to health problems for the baby. In full form Edwards’ syndrome, the baby has inherited a complete extra copy of chromosome 18.