EVOLUTION

EVOLUTION

EVOLUTION=CHANGE OVERTIME(23/6/18)

PRESTAGE(24/6/18)
ABIOGENESIS: Abiogenesis is a Hypothesis where life is formed from non-life
RNA-based life may not have been the first life to exist. Terrestrial origins – organic molecule synthesis driven by impact shocks or by other energy sources (such as UV light, redox coupling, or electrical discharges; e.g., Miller's experiments)

HUMAN STAGES(18/6/18)

1.An organic single-celled organism from abiogenesis-As a form of reaction&impact of minerals, lightning, but from the water.
2. It multiplies into many as a form of maintaining stability
3.A spherical creature-In water-An amoeba, Jellyfish(no eye)
4. Eye evolved-Stream lined shape, Then Fish
5.Fins which helped em swim-<It took 3 billion years>
6. As poisoning prevailed in the Lungs evolved to breathe outside
7.<350 million years ago>-Reptile
8. To survive the heat-Thick skin
9.Dinosaurs and Large creatures
10.Mating and offspring-To protect eggs-<fear from Dino>, protecting the offspring, Around <200-250 mill years ago>
11. Extinction of Dinosaur due to Meteor created dust, created clouds, Decay of plants, Starvation(65 Million years ago)
12. Rat  and Bugs survived
13.Food became difficult-Learnt to climb-Learnt to walk on 2
14.Brain evolved-Homini in(Hominin ae &Gorilla)
15. Hominin ae (Our ancestors)-Men&Chimpanzee(PAN)(our closest)->13 million years ago
16. Hominids (HOMINID TIMELINE-first modern ape)-(at 10 million)
17.Homo eructus(2 milion years ago)
18. Homo sapiens(0.2 million years ago ie 2 lack)

https://en.wikipedia.org/wiki/List_of_human_evolution_fossils


CAUSE OF EVOLUTION(8/7/18)

• Genetic modification-Survival
• Mutation
• Habitats
• Environment-Sun radiation,Pollution

PROOFS OF EVOLUTION(4/7/18)

1.Fishes found that can give birth and lay egg(AN INTERMEDIATE)-has infections

2.Live birth of 3 toed skinks

• It is a LIZARD found in Australia
• The lizard has attracted scientific attention due to its dual reproduction habits 
• Yellow bellied 3 toed skink s found to give birth in the cold
• In high elevation some skinks are found to lay egg in the cold-extra calcium seretion that protect egg(>1000ft)
• It is PREDICTED to separate into different species
• INTERMEDIATE-In low-elevation populations from northern and southern in New South Wales exhibit short-period oviparity, an intermediate between viviparity and typical oviparous behaviors
• There has found to be the difference in the thickness of eggshells in different biomes.

                                          Distribution of the Yellow-bellied three-toed Skink


3.Darwin's finches(bird)

     Darwin's finches are one of the break event that leads to this discovery. In the island of galagapos, Darwin has observed evolutionary changes.

• Beak was suited for cracking large nuts.
• Seen here is adapted radiation of finch A. (Geospiza magnirostris) into three other species of finches found on the Galapagos Islands. 
• Due to the absence of other species of birds, the finches adapted to new niches. 
• The finches beaks and bodies changed allowing them to eat certain types of foods such as nuts, fruits, and insects.

1. Geospiza magnirostris
2. Geospiza parvula
3. Certhidea olivacea
4. Geospiza fortis

               Behaviour

• The finches are primarily granivorous, 
• but euphoniines include considerable amounts of arthropods and berries in their diet,
•  Hawaiian honeycreepers evolved to utilize a wide range of food sources, including nectar. 
• The diet of Fringillidae nestlings includes a varying amount of small arthropods. 

4.Italian wall lizard

• In 1971,10 wall lizard were introduced in ISLAND OF POD MR'CARU
• They were left for decades and observed.
• Shifted from INSECTIVOROUS to  GIANT HERBIVOROUS
• Island Lizard became larger
• Developed Cecal valve muscle-SEPARATES SMALL&LARGE INTESTINE