LIFE SCIENCE

Detailed explanation-1: -The correct answer is-In sexual reproduction, the offspring of a human being is not a true copy of its parents because it inherits half of its genetic material from each parent. During the formation of gametes (sperm and egg cells), the genetic material undergoes a process of recombination known as crossing over.

Detailed explanation-2: -DNA is passed down randomly The DNA you inherit is random. One or both parents may have ethnicities that they didn’t end up passing down to you–or they may have passed down only a small portion of a region they have.

Detailed explanation-3: -One copy is inherited from their mother (via the egg) and the other from their father (via the sperm). A sperm and an egg each contain one set of 23 chromosomes. When the sperm fertilises the egg, two copies of each chromosome are present (and therefore two copies of each gene), and so an embryo forms.

Detailed explanation-4: -The shuffling is random, so each reproductive cell gets a different combination of gene versions. That means no two reproductive cells are alike. And it’s why, no matter how many kids two parents have together, each one will be genetically unique.