NEET BIOLOGY

Detailed explanation-1: -The head of the sperm cell contains the male’s genetic information that is to be passed on to the next generation. Normally, the head of a sperm cell contains one copy of each chromosome .

Detailed explanation-2: -It is passed down from the father in the sperm. The DNA in these cells is haploid i.e. n. When they fertilize it becomes 2n. This ensures that the genetics from both the parents is passed on without disturbing the chromosome number.

Detailed explanation-3: -The head of the sperm contains the DNA, which when combined with the egg’s DNA, will create a new individual. The tip of the sperm head is the portion called the acrosome, which enables the sperm to penetrate the egg. The midpiece contains the mitochondria which supplies the energy the tail needs to move.

Detailed explanation-4: -What carries the genetic information? Genetic information is all of the information stored in our DNA. DNA stands for “deoxyribonucleic acid.” The strands of DNA look like a twisted ladder, known as a double helix.

Detailed explanation-5: -We now know that the DNA carries the hereditary information of the cell (Figure 4-2). In contrast, the protein components of chromosomes function largely to package and control the enormously long DNA molecules so that they fit inside cells and can easily be accessed by them.