NEET BIOLOGY

Detailed explanation-1: -Of the 23 chromosomes in human spermatozoa, chromosomes 13, 18, 21, X, and Y are important because higher incidence of abnormalities in these chromosomes can to lead miscarriages or live births (Pang et al., 1999, 2005, 2010; Rubio et al., 2001).

Detailed explanation-2: -Normally, each cell in the human body has 23 pairs of chromosomes (46 total chromosomes).

Detailed explanation-3: -Sperm and eggs end up with the DNA they get through a process called meiosis. When cells normally make new copies of themselves, each of the new cells ends up with 46 chromosomes (at least for humans). However, in meiosis, each new cell ends up with 23.

Detailed explanation-4: -The severity of the condition and the signs and symptoms depend on the size and location of the duplication and which genes are involved. Features that often occur in people with chromosome 5p duplication include developmental delay, intellectual disability, behavioral problems and distinctive facial features.