A chromosome that fails to pair with another during the prophase stage of meiosis, and therefore does not exchange genetic information via crossing over. This situation usually occurs in polyploids with an odd chromosome compliment, such as triploids.
Different pregnancy and birth control and contraception strategies are described. Read this tutorial to learn each of th..
The kidneys are responsible for the regulation of water and inorganic ions. Read this tutorial to learn about the differ..
This tutorial looks at the relationship between organisms. It also explores how energy is passed on in the food chain an..
This tutorial elucidates body temperature regulation. Know the details here to learn how the body sets the body temperat..
Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..
Learn about the general structure of a eukaryotic gene, the transcription factors, and post-transcriptional regulation....