Shared Flashcard Set

Details

Physical Anthropology
Midterm exam study
92
Anthropology
Undergraduate 2
09/30/2012

Additional Anthropology Flashcards

 


 

Cards

Term
Species
Definition
-a class of individuals having some common characteristics or qualities; distinct sort or kind.

-the largest natural population of organisms that can potentially interbreed to produce fertile offspring.
Term
Hominin
Definition
any species of the primate tribe Hominini (Humans and Apes)
Term
Bipedalism
Definition
referring to walking and running on two feet. ( Humans are the only fully bipedal primates today.)
Term
adaptation
Definition
the process by which populations of organisms respond to long term environmental stresses by permanent genetic change--i.e., by evolving.
Term
culture
Definition
the quality in a person or society that arises from a concern for what is regarded as excellent in arts, letters, manners, scholarly pursuits, etc.
Term
Bicultural Evolution
Definition
the pattern of human evolution in which the effects of natural selection are altered by cultural inventions.
Term
Subfields of Anthropology
Definition
-Cultural
-Physical
-Archaeological
-Linguistic
Term
Ethnography
Definition
a branch of anthropology dealing with the scientific description of individual cultures.
Term
Areas of Physical Anthropology
Definition
-paleoanthropology
-anthropometry
-molecular anthropology
-osteology
-forensic anthropology
-primatology
Term
Applied Anthropology
Definition
the application of the method and theory of anthropology to the analysis and solution of practical problems.
Term
The Scientific Method
Definition
1. Characterizations
2. Hypothesis
3. Predictions from hypothesis
4. Experiments
5. Evaluation and Improvement
6. Conclusions
Term
Hypothesis
Definition
a proposition, or set of propositions, set forth as an explanation for the occurrence of some specified group of phenomena
Term
Natural Selection
Definition
an evolutionary mechanism that occurs when some individuals of a population are better able to adapt to their environment and, subsequently, produce more offspring.
Term
Carlolus Linnaeus
Definition
a Swedish botanist, physician, and zoologist, who laid the foundations for the modern scheme of binomial nomenclature. He is known as the father of modern taxonomy, and is also considered one of the fathers of modern ecology.
Term
Taxonomy
Definition
the academic discipline of defining groups of biological organisms on the basis of shared characteristics and giving names to those groups.
Term
Lamarck
Definition
-Early proponent of the idea that evolution occurred and proceeded in accordance with natural laws.
1. the environment gives rise to changes in animals
2. life is structured in an orderly manner and that many different parts of all bodies make it possible for the organic movements of animals
Term
Cuvier
Definition
French Naturalist and Zoologist
-established extinction as a fact
Term
Malthus
Definition
-English scholar, influential in political economy and demography
-theories about population and its increase or decrease in response to various factors.
-Malthusianism became an intellectual stepping-stone to the idea of natural selection.
Term
Lyell
Definition
Wrote Principals of Geology.
-popularized uniformitarianism – the idea that the earth was shaped by the same processes still in operation today
Term
Mary Anning
Definition
British fossil collector, dealer, and paleontologist
-known for a number of important finds she made in the Jurassic marine fossil beds
Term
Darwin
Definition
English naturalist.[I] He established that all species of life have descended over time from common ancestors,[1] and proposed the scientific theory that this branching pattern of evolution resulted from a process that he called natural selection, in which the struggle for existence has a similar effect to the artificial selection involved in selective breeding.
-Voyage of the Beagle around South America
Term
Darwin's Natural Selection influenced by Selective Breeding
Definition
Farmers and Malthusian Nature: selecting from chance variants so that "every part of newly acquired structure is fully practical and perfected"
Term
5 Steps of Natural Selection
Definition
-Improvement on personal survival. (Predation, habitat)
-Improvement on survival of young,
-Improvement on ability to secure nourishment/energy.
-Improvement on Co-operative strategies.
-Improvement in Intellect, cultural and tool-using.
Term
Intelligent Design and Creationism
Definition
the proposition that "certain features of the universe and of living things are best explained by an intelligent cause, not an undirected process such as natural selection."
Term
-Somatic Cells
-Gametes
Definition
-in a multicellular organism, any cell other than a gamete, germ cell, gametocyte or undifferentiated stem cell
-a cell that fuses with another cell during fertilization (conception) in organisms that reproduce sexually.
Term
DNA makeup
Definition
Two long polymers of simple units called nucleotides, with backbones made of sugars and phosphate groups joined by ester bonds.
Term
DNA Replication
Definition
Each double strand of DNA splits into two single strands. --Each of these single strands acts as a template for a new strand of complementary DNA, based on the pairing of bases: TAGC
Term
Proteins
Definition
-Constructed from one or more unbranched chains of amino acids
-Necessary for bodily functions
Term
Enzymes
Definition
Molecules that catalyze chemical reactions in the body.
Term
Protein Synthesis
Definition
-Transcription
-Transferral
-Translation
Term
Transcription
Definition
the process of creating a complementary RNA copy of a sequence of DNA
Term
Translation
Definition
mRNA produced by transcription is decoded by the ribosome to produce a specific amino acid chain that will later create an active protein
Term
Gene
Definition
a molecular unit of heredity of a living organism
Term
Exon
Definition
a sequence of DNA that is transcribed into RNA and then translated into protein
Term
Intron
Definition
any nucleotide sequence within a gene that is removed by RNA during protein synthesis
Term
Regulatory Gene
Definition
a gene involved in controlling the expression of one or more other genes
Term
Homeobox (HOX) Gene
Definition
a DNA sequence found within genes that are involved in the regulation of patterns of anatomical development
Term
Chromosome
Definition
an organized structure of DNA and protein found in cells
-Eukaryotes
-Prokaryotes
Term
Allele
Definition
one of two or more forms of a gene or a genetic locus (generally a group of genes)
Term
Mitosis
Definition
the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets
Term
Meiosis
Definition
a type of cell division necessary for sexual reproduction in eukaryotes, producing gametes or spores
Term
Mendel's law of Segretation
Definition
The Law of Segregation: every individual possesses a pair of alleles for any particular trait and that each parent passes a randomly selected copy one of these to its offspring. The offspring then receives its own pair of alleles for that trait. Whichever of the two alleles in the offspring is dominant determines how the offspring expresses that trait
Term
Mendel's laws:
Definition
1. Segregation
2. Inheritance, or Independent Assortment
Term
Mendel's law of Inheritance
Definition
separate genes for separate traits are passed independently of one another from parents to offspring.
Term
Homozygous
vs.
Heterozygous
Definition
-If both alleles are the same for the trait
-If both alleles are different for the trait
Term
Genotype
vs.
Phenotype
Definition
-Genetic makeup of a cell, usually in reference to a specific trait
-the composite of an organism's observable characteristics or traits
Term
Phenotypic Ratio
Definition
a ratio that shows the different outcomes you can get from a genetic cross
Term
Sex-Linked Trait
Definition
Trait passed down on the sex chromosomes. Most found on X chromosome.
Term
Mendelian Traits
Definition
-Influenced by one gene
-Expressions not usually influenced by environment
-Distribution of phenotypes into just a few discrete categories
Term
Polygenic Traits
Definition
-Influenced by more than one gene
-Expressions may be much influenced by environnment
-Distribution of phenotypes is continuous with no discrete categories
Term
Levels of Evolution
Definition
-Molecular
-Cellular
-Individual
-Population
Term
Modern Evolutionary Theory
Definition
-The production and redistribution of variation (inherited differences between individuals).
-Natural selection acting on this variation (whereby inherited differences, or variation, among individuals differentially affect their ability to reproduce successfully).
Term
Evolution
Definition
the change in the inherited characteristics of biological populations over successive generations.
Term
Factors that Produce and Redistribute Variation
Definition
1) Mutation - molecular alteration in genetic material.
2) Gene Flow – the exchange of genes between populations
3) Genetic Drift and Founder Effect – the random factor in evolution, a function of population size
4) Recombination – when members of chromosome pairs exchange segments
Term
Macroevolution
vs.
Microevolution
Definition
-refers to large-scale evolutionary forces:
-Fundamental perspectives concerning geological history
-principles of classification
-modes of evolutionary change
-the changes in allele frequencies that occur over time within a population, due to mutation, selection, gene flow, and genetic drift.
Term
Homology
Definition
Structures that are shared by species on the basis of descent from a common ancestor
Term
Analogy
Definition
Similarities produced as separate evolutionary responses to roughly similar functional demands
Term
Homoplasy
Definition
The process that leads to the development of analogies
Term
Causes of Population Isolation
Definition
-Behavioral isolation: behavioral differences that interfere with mating
-Mate recognition: coloration patterns of faces or size, location coloration, or smell of female genital swelling varies in baboon populations
Term
Biological Species Concept
Definition
Species are groups of individuals capable of fertile interbreeding but reproductively isolated from other such groups
Term
Ecological Species Concept
Definition
focuses on natural selection and the influences of varied habitats
A species is a group of organisms exploiting a single niche, or ecological niche: the physical and biological position of the organism in the ecosystem.
Term
Phylogenic Species Concept
Definition
when reproductive and ecological isolation can’t be defined (fossils) - splits many populations into separate species based on an identifiable parental pattern of ancestry.
Term
Allopatric Speciation
Definition
requires complete reproductive isolation within a population leading to geographic separation from ancestral population.
Term
Parapatric Speciation
Definition
Only partial reproductive isolation is required in parapatric speciation
Separation occurs through reinforcement of mate recognition and selective breeding
Ranges of populations may be partially overlapping
Term
Sympatric Speciation
Definition
occurs completely within one population with no reproductive isolation.
Term
Intraspecific Variation
vs.
Interspecific Variation
Definition
-defines variation accounted for by individual, age, and sex differences seen within every biological species
-defines variation that represents differences between reproductively isolated groups.
Term
Adaptive Radiation
Definition
A process that takes place when a life form rapidly takes advantage of the many newly available ecological niches.
Term
Adaptive radiation of mammals in the Cenozoic era
Definition
-Mammals: larger brains- process information
-enlarged neocortex (higher brain functions)-greater ability to learn.
Term
Generalized characteristics
vs.
Specialized characteristics
Definition
-if adapted for many functions (limb with 5 digits)
-more advantageous for rapid diversification
-if limited to a narrow set of functions (foot to walk upright)
Term
Phyletic Gradualism
vs.
Punctuated Equilibrium
Definition
-change accumulates gradually in evolving lineages
-evolutionary change proceeds through long periods of stasis punctuated by rapid periods of change.
Term
5 Generalized Characteristics of Primates
Definition
-Fur (body hair)
-Long gestation followed by live birth
-Homeothermy, the ability to maintain a constant body temperature
-Increased brain size
-Capacity for learning and behavioral flexibility
Term
Primate Limbs and Locomotion
Definition
1. A tendency towards erect posture.
2. Hands and feet possess grasping abilityprecision grip
3. A flexible, generalized limb structure
-Quadrupedal
-Braciation, is found among the apes.
-Prehensile tails, found only among the new world monkeys, are used as an aid to locomotion.
Term
Teeth and Diet of Primates
Definition
-Generally omnivorous, reflected in their generalized dentition.
-Most have four types of teeth: incisors, canines, premolars and molars.
-Most eat a combination of fruits, leaves, and insects.
Term
Definition
-Color visions
-Stereoscopic vision/Binocular vision
-Reduced Olfaction, more reliance on sight
-Expansion and Increased Complexity of the Brain
Term
Primate Maturation
Definition
More efficient fetal nourishment, longer gestation, reduced number of offspring, delayed maturation, longer life span
Term
Primate Learning
Definition
greater dependence on flexible, learned behavior (greater child dependency); social groups and permanent association of adult males
Term
Primate Behavior
Definition
Diurnal activities – active during the day (MOST primates)
Term
Arboreal Hypothesis
Definition
-Arboreal (trees) living was the most important factor in the evolution of primates.
-Prehensile limbs are adapted to climbing in the trees.
-A variety of foods led to the omnivorous diet and generalized dentition.
-Increased reliance on vision and grasping limbs very beneficial
Term
Visual Predation Hypothesis
Definition
-Other tree dwellers not primate-like
-Visual predators (cats and owls) have forward facing eyes (depth perception!)
-Forward facing eyes enabled primates to judge distance when hunting in trees
-Depth perception important to hunters
-We were not only living in trees, but we were hunting in trees.
Term
Angiosperm Radiation Hypothesis
Definition
-Basic primate traits developed with the appearance of flowering plants
-Provide nectar, seeds, fruits, etc.
-Primate characteristics may have developed as a response to a demand for fine visual and tactile discrimination- have to know where plants were and which plants to eat
Term
Strepsirhini
Definition
-The most “primitive”, or closest to earlier mammalian ancestors
- Smaller brain to body size, greater reliance on olfaction, more nocturnal
-More reliance on olfaction as evidenced by moist, fleshy pad, or rhinarium.
Term
Haplorhini
Definition
Increased behavioral complexity that Strepsirhini
Term
Plattyrhini (New World Monkeys)
Definition
-Arboreal environments
-flat noses with outward facing nostrils
-size, diet and ecological adaptation vary
-some possess prehensile tails
-all diurnal (awake during the day), except owl monkey
-quadrupedal, except spider monkeys are semibrachiators
-most live in mixed-sex groups of all ages
Term
Catarrhini (Old World Monkeys)
Definition
-habitat ranges from tropical jungle to semiarid desert to seasonally snow-covered areas
-Cercopithecidae
-most are quadrupedal and primarily arboreal
-ischial callosities, hardened skin on buttocks
-sexual dimorphism- difference in size between genders
Term
Anthropoid
Definition
-Humans, Apes, Monkeys
-Larger brain and body size
-Reduced reliance on the sense of smell; increased reliance on vision
-Greater degree of color vision
Term
Hominoid
Definition
-Apes and Humans:
-Larger body size
-Absence of a tail
-Lower back shorter and more stable
-Arms longer than legs
-Anatomical differences in shoulder joint
-More complex behavior
-More complex brain and cognitive capabilities
-Increased period of infant development and dependency
Term
Cercopithecines
vs.
Colobines
Definition
- More omnivorous with cheek pouches, arboreal, mostly found in Africa
- Mainly eat leaves
Term
Gibbons and Simiangs
Definition
-Found in the tropical areas of southeast Asia.
-Adaptations for brachiation may be related to feeding while hanging from branches.
-Diet is largely fruit with leaves, flowers, and insects.
-Basic social unit is a monogamous pair and their offspring.
-Males and females delineate their territories with whoops and “songs”.
Term
Orangutans
Definition
-Found in heavily forested areas of Borneo and Sumatra.
-Almost completely arboreal.
-males = 200 lbs, females = 100 lbs
-Pronounced sexual dimorphism.
-Solitary
-Principally frugivorous (feed-eating).
Term
Gorilla
Definition
Largest of the living primates.
Confined to forested regions of central Africa.
-Sexual Dimorphism: Males can weigh up to 400 pounds, females 200 pounds.
-Primarily terrestrial, using a posture called “knuckle –walking”.
-Groups consist of one large silverback male, a few adult -females, and their subadult offspring.
-Completely vegetarian
Term
Chimpanzees
Definition
-Found in equatorial Africa.
-Anatomically similar to gorillas particularly in limb proportions and upper-body shape.
-Locomotion includes knuckle-walking on the ground and brachiation in the trees.
-Eat a variety of plant and animal foods.
-Large communities of as many as 50 individuals.
-Actively hunt- fairly violent
Term
Bonobos
Definition
-Only found in an area south of the Zaire river.
-Population is believed to only number a few thousand individuals.
-Exploit the same foods as chimps, including occasional small mammals.
-Male-female bonds constitute the societal core.
-Sexuality includes frequent copulations throughout the female's estrous cycle.
-They have tons of sex. Like, non-discriminatory sex.
-One of only other animals to have sex for pleasure
Supporting users have an ad free experience!