This document summarizes key aspects of human evolution from early primates to modern humans. It describes how primates evolved adaptations for life in trees 65 million years ago. Early hominins like Australopithecus became bipedal 4.4 million years ago. Homo habilis began using tools 2.5 million years ago. Homo erectus was the first to migrate out of Africa 1.8 million years ago. Anatomically modern humans emerged in Africa around 100,000 years ago and replaced other hominin species as they spread to other continents.
In the simplest of words, heredity refers to the passing of traits or characteristics through genes from one generation (parent) to the other generation (offspring). Heredity is very evidently seen in sexual reproduction. ... Variation is important because it contributes to the evolution and forms the basis of heredity.
In the simplest of words, heredity refers to the passing of traits or characteristics through genes from one generation (parent) to the other generation (offspring). Heredity is very evidently seen in sexual reproduction. ... Variation is important because it contributes to the evolution and forms the basis of heredity.
Heridity and Evolution - Biology Class 10 CBSEAthira S
This Powerpoint Presentation is on the chapter Heredity and Evolution from class 10 Biology in CBSE Board. The contents of the presentation are from the NCERT science textbook for class 10 and Lakhmir Singh Biology Handbook Class 10.
human evolution, origin of life, big bang theory, theories on origin of life, evolution of life forms, experimental evidence on theory of chemical evolution, evidences of evolution, homology and analogy, biochemical and biogeographical evidences, adaptive radiation, lamarck's theory of evolution, darwins theory of evolution, mechanism of evolution, hardy weinberg principle, mutations
Evolution, Primatology, Human Ancestry, Physical variationanimation0118
Anthropology
REFERENCES:
Ember, C. (2007). Anthropology. Singapore: Pearson Educational South Asia.
Ember, C., Ember, M., & Peregrine, P. (2009). Human evolution and culture: Highlights of anthropology. (6th ed.). New Jersey: Pearson Prentice Hall, Inc.
Ervin, A. (2005). Applied anthropology: Tools and perspectives for contemporary practice. Boston: Pearson.
Kottak, C. (2011). Anthropology: Appreciating cultural diversity. New York: Mc Graw-Hill.
Kottak, C. (2008). Anthropology: The explanation of human diversity. Boston: Mc Graw-Hill.
Launda, R. (2010). Core concepts in cultural anthropology. Boston: McGraw-Hill Higher Education.
Nanda, S. (2007). Cultural anthropology. Belmont, California: Walsworth/Thomson Learning.
Heridity and Evolution - Biology Class 10 CBSEAthira S
This Powerpoint Presentation is on the chapter Heredity and Evolution from class 10 Biology in CBSE Board. The contents of the presentation are from the NCERT science textbook for class 10 and Lakhmir Singh Biology Handbook Class 10.
human evolution, origin of life, big bang theory, theories on origin of life, evolution of life forms, experimental evidence on theory of chemical evolution, evidences of evolution, homology and analogy, biochemical and biogeographical evidences, adaptive radiation, lamarck's theory of evolution, darwins theory of evolution, mechanism of evolution, hardy weinberg principle, mutations
Evolution, Primatology, Human Ancestry, Physical variationanimation0118
Anthropology
REFERENCES:
Ember, C. (2007). Anthropology. Singapore: Pearson Educational South Asia.
Ember, C., Ember, M., & Peregrine, P. (2009). Human evolution and culture: Highlights of anthropology. (6th ed.). New Jersey: Pearson Prentice Hall, Inc.
Ervin, A. (2005). Applied anthropology: Tools and perspectives for contemporary practice. Boston: Pearson.
Kottak, C. (2011). Anthropology: Appreciating cultural diversity. New York: Mc Graw-Hill.
Kottak, C. (2008). Anthropology: The explanation of human diversity. Boston: Mc Graw-Hill.
Launda, R. (2010). Core concepts in cultural anthropology. Boston: McGraw-Hill Higher Education.
Nanda, S. (2007). Cultural anthropology. Belmont, California: Walsworth/Thomson Learning.
Evolution is a process that results in changes that are passed on or inherited from generation, which help organisms survive, reproduce, and raise offspring. These changes become common throughout a population, leading to new species.
Biological evolution explains how all living things evolved from a single common ancestor, but any two species may be separated by millions or billions of years.
This species was bipedal, fully erect, and capable of grasping tools and weapons with its forearms. These fossil specimens have a larger brain size of 600 cubic centimeters (37 cubic inches), as well as a jaw and tooth size more akin to modern humans.
-Fossil skulls contain tangible evidence of unequal brain development, which is mirrored in the way stone tools were formed.
-The earliest of our ancestors to show a significant increase in brain size and also the first to be found associated with stone tools
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Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
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Bills have a main role in point of sale procedure. It will help to track sales, handling payments and giving receipts to customers. Bill splitting also has an important role in POS. For example, If some friends come together for dinner and if they want to divide the bill then it is possible by POS bill splitting. This slide will show how to split bills in odoo 17 POS.
2. Darwin and Human
Evolution
• Lamarck posed the
hypothesis about our
relation to apes before
Darwin
• Darwin published “Descent
of Man” in 1871
• caused criticism of his
theory, but already the
basic ides of evolution had
taken hold in the scientific
community.
6. What’s new in Primates
• Origins estimated back to 65 MYA
– Oldest fossil only goes back 45 MYA
– Insect eating nocturnal mammal
• Derived traits for life in trees in the tropics
– Grasping hands and feet
– Separate big toe / thumb
– Sensitive Skin ridges on hands and feet
• Large brains – eye hand coordination- brachiating
• Short jaws
• Forward looking eyes – close together, stereo vision
• Flat nails – not claws
• Long parental care with learned behaviors.
• Single births
• Fully opposable thumb
7. Primate groups
• Prosimians
– include Lemurs, Tarsiers
– Probably more similar to origin arboreal ancestral primates
• Anthropoids
– Include Monkeys, Apes and Humans
– Split from the Prosimians about 45 MYA
8. Anthropoids
• Include the Monekys and the Hominiods
• Monkeys evolved in two areas ,split about 35 MYA
• New World monkeys (older),
– all arboreal
– have prehensile tail, nostrils open to the sides
– Squirrel and capuchin monkeys
• Old World monkeys
– both arboreal and ground dwellers
– Lack prehensile tail, nostrils open downwards
– Rhesus monkey, baboons, macaques
9. Hominoids
• Include Great Apes and Humans
– Apes: Gibbons, Orangutan, Gorillas, Chimpanzee/ Bonobo
• Split from monkeys about 20-25MYA
• Larger brain size to body size ratios than other primates
• More flexible behavior (less instinct, more learned behaviors)
• Mostly larger than monkeys (except gibbons)
• Have long arms, short legs and no tail.
• Gibbons and orangutans primarily arboreal
• Gorrillas, Chimps and Humans
– Social behavior
– Primarily terrestrial
– Chimps more closely related to humans than gorillas.
12. Hominins (Hominids)
• All species believed to be more closely related to human than
chimpanzees
• Humans and our direct ancestors, since the split from chimps.
• Major groups:
– Australopithecines
– Paranthropsus
– Homo genus
• Chimps are not ancestral species !! We shared a common
ancestor.
• Not a direct line to us !! A radiating lineage. Several hominids
species co-existed.
• Gorillas, chimps and hominids split about 6-8 MYA. At a
generous 25 year generation time: 320,000 generations ago
with strong natural selection
15. Hominid evolution
• Driven by life on the ground.
• Not all traits at the same time!!
– Mosiac Evolution
• We walked upright for several million years
before an increase in skull size
16. Chromosome anomaly:
• Other extant hominoids have 2n=48.
• Hominids (at least humans) have 46.
• Two ape chromosomes fused into the human chromosome
number 2 ( our largest).
• Changed happened after with out last common ancestor with
the chimpanzee lineage.
18. Hominid life on ground:
• Bipedalism, upright walking
• Jaw shape -smaller with specialized teeth with an
omnivorous diet. Pronounced chin.
• larger brain size, increased cerebrum, by paedogenesis
• Reduced size difference between sexes
• tool use, language, social behavior
• Extended parent care time- longer juvenile period
• More learning
• Reduced sense of smell
• Increased size of brain for vision and co-ordination
with muscles
• Eyes are larger and directed forward
19.
20. Origins
• Sahelanthropus tchadensis current oldest
fossil at 6-7 million years ago.
– Reduced canine teeth
– Flatter faces
– More upright and bipedal than other
hominoids
• Fossils discovered in 2002
22. Orrorin tugenensis
• Dates to 6.1-5.8 MYA
• Discovered in 2000
• Thought to be in evergreen forest, not open grassland
• Oldest bipedal fossils
• Fossilized bones from 5 individuals
• Only a few femurs and teeth
24. • (Tattersall 1996):
• "In a quadruped – an ape, say – the feet are held far apart,
and each hind leg descends straight to the ground beneath the
hip socket. In bipedal humans, on the other hand, the feet
pass close to each other during walking so that the body's
center of gravity can move ahead in a straight line. If this
didn't happen, the center of gravity would have to swing with
each stride in a wide arc around the supporting leg. This would
be extremely clumsy and inefficient, wasting a lot of energy.
So in bipeds, both femora angle in from the hip joint to
converge at the knee; the tibiae then descend straight to the
ground. In the human knee joint, this adaptation shows up in
the angle – known as the "carrying angle" – that is formed
between the long axis of the femur and tibia."
27. Australopithecus
First “humans”: Australopithecus, about 4.4 MYA.
• Walked fully upright with humanlike teeth and
hands.
– Fossil evidence of hip, hands.
• Skull, capacity about 1/3 modern human size.
• lasted 3 MY.
• All fossils from Eastern and Southern Africa
36. Homo habilis
• Homo habilis fossils from 2.5 to 1.6 MYA.
• After walking upright for 2 MY these hominids
now used their brains and fashioned simple
stone tools.
• Co-existed with smaller-brained
Australopithecus for nearly 1 MY.
• Australopithecus africanus was a dead end, no
new lineages.
• Homo habilis lead to H. erectus, to H. sapiens.
40. Homo ergaster
• Less sexual dimorphism, more pair bonding
• Larger brain
• Slender legs, distance walking
• Short straight fingers. No longer climbing trees
• Smaller teeth, foods more prepared less hard
chewing
• More advanced tools
• More habitats
• 1.9 - 1.6 MYA
41. Homo erectus
• Homo erectus was the first to migrate out of
Africa into Europe and Asia.
– Java man and Peking man are Homo
erectus.
– H. erectus 1.8 MYA - 300,000 YA.
– gave rise to larger populations, had to
continually expand to find food, hunt
farther out.
42. Homo heidelbergensis
– Descended from H. ergaster in africa, spread
out.
– Northern populations in Europe under ice
age conditions became The Neanderthals
200,000 -40,000 years ago in Europe
– Reaming population in Africa adapted to
drought conditions, became homo sapiens,
spread out to rest of world.
44. Homo neanderthalensis
• The Neanderthals
• 200,000 -40,000 years ago in
Europe
• Brain as large or larger than
present day humans
• Buried their dead
• Made hunting tools from stone
and wood
• Carnivorous
47. Homo sapiens
• Two models for the origins of anatomically
modern Humans
• Multi regional model has interbreeding among
the different H. erectus groups and a common
origin for Homo sapiens on the different
continents.
48. Out of Africa
• the replacement model has a new H. sapiens
species forming in Africa 100,000 years ago
and radiating out and displacing the H erectus
populations.
– Supported by molecular data
• Three times???
– Homo erectus
– Homo heidelbergensis
• Homo neaderthalensis
– Homo sapiens
57. Homo florensis
• Discovered in 2003
• Lived until as recently as 18,000
years ago
• Very small- Island effect
– Pygmy elephants
• Descent from larger H. erectus