Essays on Evolutionary biology

Homeotic complex (Hox) genes are defined as a group of related genes that specify the anterior-posterior axis and segment identity of metazoan organisms during early embryonic development. These are situated very close to one another on the chromosome in groups of clusters. The orders of these genes located on the chromosomes are the same as…

The species I will be discussing is Alopex lagopus whose common name is Arctic fox. The Arctic foxes are located in the Arctic region and they live in the areas around the North Pole which is characterized by long durations of snow cover (Blix, 2005). The trait I will be discussing is fur coloration. The…

Animals in the wild have developed defense mechanisms to survive over time. The squid, a member of the Mollusca class Cephalopod, exemplifies adaptation and evolution through natural selection. However, predators that depend on speed and eyesight pose a new threat to the squid. These predators are easily detected by the squids and introduce a novel…

What is a gene?According to the national institute for health and ‘TheBody. com” a gene is a unit of heredity.  The gene represents the smallest collection of DNA that can be demonstrated to transmit characteristics (traits)  to an organism’s offspring.Both sites are well established bodies involved in the science of physiology and health fields dealing…