All the cells in the human body regenerate and are replaced as they age and become less functional. Regulatory and maintenance mechanism in
the human body cause new cells to form to replace the aging cells. Which
of the following best describes the new cells? *

The new cells do not share genetic material with the parent cells

The new cells are the identical copies of the parent cells

The new cells are smaller than the parent cells

The new cells combine characteristics of several parent cells

it supports cell theory.it states that all living cells are made from cells

fertilization, pictured in figure 24.23a is the process in which gametes (an egg and sperm) fuse to form a zygote. the egg and sperm each contain one set of chromosomes. to ensure that the offspring has only one complete diploid set of chromosomes, only one sperm must fuse with one egg. in mammals, the egg is protected by a layer of extracellular matrix consisting mainly of glycoproteins called the zona pellucida. when a sperm binds to the zona pellucida, a series of biochemical events, called the acrosomal reactions, take place. in placental mammals, the acrosome contains digestive enzymes that initiate the degradation of the glycoprotein matrix protecting the egg and allowing the sperm plasma membrane to fuse with the egg plasma membrane, as illustrated in figure 24.23b. the fusion of these two membranes creates an opening through which the sperm nucleus is transferred into the ovum. the nuclear membranes of the egg and sperm break down and the two haploid genomes condense to form a diploid genome.

explanation: