Please enable JavaScript.
Coggle requires JavaScript to display documents.
how genes drive the process of evolution - Coggle Diagram
how genes drive the process of evolution
adaptive evolution
what is a gene drive
a gene drive is when a trait is ensured to be passed onto the next generation.
this also had happened on the island darkrock. the mice at dark rock were very light colored when they first had arrived there. but the time a few generation past they all became dark colored to adapt to their environment
an example of this is when mice were separated on darkrock and light rock. The mice on light rock had a gene drive that had activated due to being to visible to predators. they passed that gene drive down to the next generation which made them lighter so they can camouflage.
tiktaalik evolution
tiktaaliks use to be sea creatures but as time and predators evolved they had 2 choices leave the ocean or evolve in water more. this is also known as adaptive evolution.
due to environmental pressure tiktaaliks had grown arm like limbs that were able to push itself off the ocean floor as shown
here
this was the first step in evolution toward humanity
how do hox genes determine what you are
entangled in all other types of dna theres a specific gene that give orders to other genes. they are called hox genes they tell other genes when to activate, for how long it should be active and when it should stop.
how these gene drive the process of evolution is by determining the body plan of an organism. they encode regulators to keep genes stable and to tell it when it can develop and for how long.
changes in hox genes can create new traits that help organisms adapt to their new environment
they also determine the shape of different body segments. (like the head and abdomen)
Essentially, Hox genes are like address labels for your body parts. They make sure your legs grow where your legs are supposed to grow and that your antennae grow on the head and not somewhere else.
Without Hox genes working correctly, you might end up with body parts in the wrong place. They're super important for building the body plan the right way from head to tail.
Natural Selection
selection pressure
animals in a ecosystem with advantageous traits in an ecosystem are selected because they are more likely to survive and thrive in an environment
competition
all things in an ecosystem require competition to be able to acquire food, water, shelter, territory, mates and other parts of the eco-system.