Basic Nature Of Sexual Reproduction

Series: Continuity of Life Series

Duration: 15 0:14:00

Genre: Animal | Educational | Nature

Creator: Gateway Educational Media.

Format: 16mm

Color: Color & B&W

Sound: sound

Description: Uses microscope photography to illustrate the processes of reproduction. Explains that the basic features of sexual reproduction remain the same even though they may differ in plants and animals in specific detail. Presents models of cells and chromosomes to demonstrate how, through random assortment and chance union, sexual reproduction makes possible great variations. Tells how these variations benefit man and ensure the survival of many living things in a varied environment. , High-powered microscopic shots are used to illustrate the principle that sexual reproduction in simple and complex plants and animals always involves the production and the union of gametes; exemplifies the details of fusion by showing the union of the sperm and egg of a salamander. By means of time-lapse photography, follows the steps in the life cycle of the salamander. Explains that sexual reproduction provides both for the continuation of life and for the variations which benefit man.

Complete Record: Uses microscope photography to illustrate the processes of reproduction. Explains that the basic features of sexual reproduction remain the same even though they may differ in plants and animals in specific detail. Presents models of cells and chromosomes to demonstrate how, through random assortment and chance union, sexual reproduction makes possible great variations. Tells how these variations benefit man and ensure the survival of many living things in a varied environment. , Uses cinephotomicrography to illustrate the processes of reproduction. Points out that although sexual reproduction may differ in plants and animals in specific detail, its basic features remain the same. Presents models of cells and chromosomes to demonstrate that through random assortment and chance union, sexual reproduction makes possible great variation which has benefited man and has ensured the survival of many living things in a varied environment., NOTE: Two (or more) records have been merged together to create this data.