Which of the following are not examples of a subculture? a. san francisco’s chinatown. c. the navajo of the southwest. b. miami’s little havana. d. none of the above

The right option is; c. the Navajo of the Southwest.

Subculture is a cultural group of people that separates itself from the parent culture (the majority) in which it originates from, usually keeping some of its founding principles. Subcultures establish their own distinct values and norms concerning social, cultural, and political affairs. The Navajo of the Southwest are not examples of a subculture, while San Francisco's Chinatown and Miami's Little Havana are.

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:

currents is the correct answer.