Left bundle branch block is a problem with the heartâs electrical wiring system. Your heart has 4 chambers. The 2 upper chambers are called atria, and the 2 lower chambers are called ventricles.
The process of sexual reproduction involves two parents, each contributing one gamete. Gametes are produced. by a process called meiosis, which starts by the duplication of the chromosomes, followed by two rounds of cell divisions and halving of the chromosome number.Gametes have half the chromosome number of other adult. cells of an organism.A key feature of meiosis is the exchange of chromosome pieces which occurs in the first division of this process, called recombination or crossing over.ametes have half the chromosome number of other adult. cells of an organism. A key feature of meiosis is the exchange of chromosome pieces which occurs in the first division of this process, called recombination or crossing over.
Answer   the offspring will not be identical to the parent. Sexual reproduction mixes genes, which produces larger variety. It  speeds up adaptation, which makes the chances of survival of a  population larger. Sexual reproduction has the ability to vary the number of genetic  traits possible.