Evolution is a change in physical or psychological characteristics of a species over several generations. This change of characteristics is often brought upon by environmental distortion through the process of natural selection. A variation could include having different colors or for a bird wider Beak. In a dark environment those with darker colors would have an easier time surviving than those with lighter colors. In a forest where there are only hard seeds, a bird with a wider beak will have an easier time breaking those seeds than those who don’t. Those more advantageous traits will help those creatures survive better in their environment and pass on their genes unlike those don’t have useful or straight up disadvantageous traits will struggle to survive or just go extinct. Over a couple of generation only the with those useful traits will be left.
Here is an example let’s say that there were large amount of bears with black fur living in a deciduous forest environment. There are also a very small number of bears with white fur also living there. The black bears would have a clear advantage over the white bear when it comes to catching prey as they can camouflage and since they are bears if winter hits they go into hibernation so having white fur wouldn’t help as the whole point is to grow fat and go to sleep. Now let’s say an ice age happens, those bears who are out of hibernation have to deal with a cold environment all year long. Now that black fur that help those black bears thrive by Camouflage are now a clear give away but white bear can blend in perfectly with their environment allowing them to hunt. Over a few generations the majority of the bear population wouldn’t be black but white.
Aspects such as genetic engineering have allowed for
engineering of transgenic organisms such as bacteria to produce bioproducts
such as insulin to addresses medical disorders
such as diabetes. Another is the innovation of whole-genome sequencing that allows researchers
to determine genetic predisposition of a particular person to particular diseases.
The respiratory tract has cilia which move. Sperms also have a tail that moves. They both have the same protein in their structure called microtubules. There is a disorder in which there is the absence of a part in the microtubule. Dynein arms absent in microtubules. Because the respiratory system and sperm both contain cilia that's why these two systems have a connection and not work properly.
An introduced species, alien species, exotic species, adventive species, immigrant species, ... Non-native species can have various effects on the local ecosystem. ... Some species have been introduced intentionally to combat pests
: a compound (such as guanosine or adenosine) that consists of a purine or pyrimidine base combined with deoxyribose or ribose and is found especially in DNA or RNA
