Biology

This awe-inspiring video shows of the process of human reproduction from conception to birth. It explains how mitosis and meiosis create genetic variation, how the ovum travels from the ovary to the uterus, how sperm pass the cervix, how one sperm achieves fertilization with the ovum, how the zygote begins cell differentiation, and how the embryo grows into a fetus ready for birth.

On April 25, 1953, James Watson and Francis Crick published their groundbreaking discovery of the double helix structure of DNA, the molecule essential for passing on our genes and the ''secret of life.'' But their crucial breakthrough depended on the pioneering work of another biologist–Rosalind Franklin.

There is a lot of controversy around genetic modification of organisms and cloning. This program looks at the way man has modified genomes of plants and animals used for food since the dawn of agriculture. As knowledge of cells and genetics has increased so has man's ability to alter genomes.

Professor Alan Trounson is a distinguished Australian scientist. He was one of the pioneers of IVF treatment for infertile couples, and is now a leading international figure in stem cell research. He reviews a range of techniques and issues related to stem cell research, including: maker cell biology, gene expression and epigenetics, applications of genetics and epigenetics, ?blinking on?

Euglena is a protist whose behavior is both plant-like and animal-like (protozoan). Structures Like a mobile protozoan, its structures include a flexible outer membrane called a pellicle (not a plant-like rigid cell wall), and a flagellum for locomotion).