AP BIOLOGY

Detailed explanation-1: -s random chromosome alignment resulting in variation. occurs in prophase l fuses gametes to form offspring with genes from each parent.

Detailed explanation-2: -Fertilization is defined as the union of two gametes. During fertilization, sperm and egg fuse to form a diploid zygote to initiate prenatal development. In mammals, fertilization involves multiple ordered steps, including the acrosome reaction, zona pellucida penetration, sperm–egg attachment, and membrane fusion.

Detailed explanation-3: -Gametes are formed through meiosis (reduction division), in which a germ cell undergoes two fissions, resulting in the production of four gametes. During fertilization, male and female gametes fuse, producing a diploid (i.e., containing paired chromosomes) zygote.

Detailed explanation-4: -Sexual reproduction In males, the gametes are sperm and in females, the gametes are eggs. When these two gamete combine during fertilization, the result is a zygote, which then continues to develop into an embryo. Overview of the process of sexual reproduction.

Detailed explanation-5: -In the sexual reproduction of animals and plants, the male and female gametes join to form a single fertilised cell called a zygote, which develops into a new individual with a unique collection of genetic material.