formation of new individuals sexually or asexually; no gametes involved
process where one parent reproduces by itself;
two parents give rise to offspring that have a unique combination of genetic material;two gametes involved
Types of Asexual reproduction
Binary Fission, Budding, Spore formation
a parent cell divides into two new daughter cells the same size as the parent with the same kind and quantity of DNA.
Binary fission organisms
protozoans, bacteria, and some algae
an outgrowth on a yeast cell grows and separates from the parent cell
reproduce by budding
a cell undergoes a series of cell divisions inside its own cell wall. Each new cell produces a thick wall of its own, and the old cell wall becomes a spore case holding small thick-walled cells, the spores. These grow into new individuals
period of rapid growth and sexual maturation during which the reproductive system becomes fully functional. Secondary sex characteristics develop; LSH and FH levels are increased.
males secondary sex characteristics
growth of facial and body hair, increase in body size, and deepening of the voice
females secondary sex characteristics
development of the reproductive system, widening of the hips, and development of the breasts.
produce gametes (sperm and eggs) and secrete sex hormones testis and ovary
male reproductive structures
testes, the epididymis, the vas deferens, the urethra, and the penis. they produce and deliver sperm.
one to three degrees lower than the internal body temperature for proper sperm development
produced in the seminiferous tubules within the testes
process that results in sperm cell formation
male gametes; has a head, a middle piece, and a tail (flagellum)
site where the sperm cells are stored and matured
a nutrient-rich fluid
combination of sperm and seminal fluid
contractions of the smooth muscles lining the glands in the reproductive tract causes sperm cells to be ejected from the penis
female reproductive structures
ovaries, the Fallopian tubes, the uterus, and the vagina. In addition to producing eggs,
female reproductive system
produces eggs; prepares the body to nourish a developing embryo
Clusters of cells surrounding a single egg
stimulates a follicle to grow and mature each month