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Anthro Lab 101
n/a
56
Anthropology
Undergraduate 1
05/02/2012

Additional Anthropology Flashcards

 


 

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Term
Mosaicism
Definition
a condition in which cells within the same person hgave different genetic makeup.  Can efect - blood cells, egg and sperm cells, and skin cells. 
Term
Sicke Cell Anemia
Definition

Sickle cell anemia is a disease passed down through families in which red blood cells form an abnormal cresent shape caused by abnormal hemoglobin

 

Term
Evolutionary Fitness
Definition

The probability that the line of decent from an individual with a specific trait will not die out

 

Term
Sexual Selection
Definition
Darwin - Depending "on the advantage which certain individuals have over others of the same sex and species solely in respect of reproduction"
Term
Redundancy of the genetic code
Definition

Degeneracy - The genetic code has redundancy but no ambiguity

 

Term
Hardy-weinberg principle
Definition
Borh alleles and genotype frequencies in a population remain constant in equilibrium
Term
Genetic Equilibrium
Definition
Idea state that provides a baseline against which to measure change   Hardy - Equilibrium is improbable in nature.
Term
Gene Drift
Definition
Change in frequency of a gene varriant (allele) in population due to random sampling
Term
Founder Effect
Definition

Is the loss of genetic variation that occurs when a new population is established by a very small number of individuals from a larger population

 

Term
Euploidy
Definition
Have the correct number of chromisomes
Term
Aneuploidy
Definition
The condition of having an incorrect number of chromosomes
Term
Turner Syndrome  XO
Definition
Under developed breasts, infertile rudimentary ovaries, lack of menstration, short stature, neck webbing, heart problems, skeletal abnormalities    1 in 2000 females
Term
Klinefelter syndrome   XXY
Definition
Malformed and/or small testies, lack of sperm development, some with breast development, low fertility some with mild reardation  1 in 500  /  1 in 1000 male
Term
Zygote
Definition
fertilized egg formed by union of male and female gametes
Term
point mutation
Definition
type of mutation in which one or up to a few bases/ is/are mistakenly out of place in the DNA
Term
Non-Disjunction
Definition
failure of chromosomes to seperate before moving to opposite poles of the cell durring ana phase, results in wrong number of chromosomes in the daughter cells after cell division is complete. 
Term
Chromosomal Mutations
Definition
Mistakes that result is an extra or missing piece of chromosomes , entire chromosome, or set of chromosomes.
Term
Natural selection
Definition
A primary factor causing evolutionary change in populations in which individuals whose inherited traits allow them to better survive and/or reproduce contribute more offspring to the subsequent generation. 
Term
Gene Flow (migration)
Definition
Movement of genes from one population gene pool to another, causing change in gene frequencies of both former and new gene pools. 
Term
Allele
Definition
Alternative form if a specific gene; Different alleles code for different forms of a trait. 
Term
Mitochondria
Definition
Oblong organelle where adenosine triphosphate (ATP) production occurs for cellular energy; Possesses its own DNA, called mitochondrial DNA
Term
Genes
Definition
a segment of DNA coding for a specific polypeptide (or protein)
Term
Genotype
Definition
The allele pair present for a specific locus in an individual
Term
Phenotype
Definition
Outwardly observative traits and features of an individual; May be physical or behavioral
Term
Universal Donors
Definition
Individuals with type o blood because their blood can be donated to type a and type b individuals without provoking an immune response
Term
Universal Recipients
Definition
Individuals with type AB blood who can recieve all blood types because their blood serum has neither Anti A or Anti b antibodies ith which to attack antigens of blood cells of a different type
Term
Heterozygous
Definition
The condition of having inherited two different alleles at a particular locus
Term
Homozygous
Definition
The condition of having inherited the same two alleles from the parents at a specific locus
Term
Agglutination
Definition
Clumping effect of serum antibodies with antigens of red blood cells of a different blood type
Term
Antibodies
Definition
proteins formed by the bodys immune system in response to specific invading antigens
Term
Rh Incompatability
Definition
Immune response of a mother to her developing fetus in the RH  -  Mother begines to produce anti-bodies in response to antigens on her RH + fetus red blood cells;  Can result in potentially Fatal anemia
Term
Polar Bodies
Definition
The cell that results from the asymmetric division of an OOCYTE  -  Produced after every meiotic division  They are smaller in size and become the ovum. 
Term
Homologas pair chromosomes
Definition
Chromosomal couples of each type of chromosome
Term
Nucleus
Definition
Structure that contains the genetic material (DNA) seperated from the rest of the cell by nuclear membrane
Term
Deoxyribonuclcic Acid (DNA)
Definition
A nucleic acid in the form of a long, linear molecule compound of bases sugar and phosphate molecules; the genetic material of all organisms
Term
Messenger RNA (MRNA)
Definition
type of RNA strand synthesized by using a DNA gene as a template; carries the "messages" of the DNA sequence of a gene from the nucleus to the cytoplasm during protein synthesis
Term
Transfer RNA (tRNA)
Definition
type of RNA whose function is to transport amino acid to the appropriate place along the mRNA strands during protein synthesis
Term
Autosomes
Definition
All chromosomes except the sex chromosomes
Term
Sex Chromosomes
Definition
chromosomes responsible via their gene products, for determining the sex of an individual X and Y chromosomes
Term
Gene locus (gene Loci)
Definition
The position a gene occupies as a chromosom, 23
Term
Principle of Independent assortment
Definition
Mendel's law stating that the presence of particular "characters" (alleles) of one trait will not affect the expression of genes of another trait.
Term
Principle of Segregation
Definition
Mendel's Law stating that for any given trait, members of a pair of "characters" (alleles) seperate (segregate) from each other during the formation of gametes, so that only one copy (one gene) is passed on from each parent. 
Term
Somatic Cells
Definition
cells making up the structural composition of the body; all cells other than gametes; possess the diploid chromosome number
Term
Gametes cell
Definition
Haploid cells that pass on genmetic material to offspring at fertilization; sperm and egg cells.
Term
Hemizygous
Definition
the condition of males for an X-linked trait: becasue males only have one X chromosome, they cannot be homozygous or heterozygous for X-linked traits
Term
Nucleotide
Definition
the most basic unit of both DNA and RNA; consists of one phosphate molecule, one sugar molecule, and one base
Term
Codon
Definition
Triplet of three bases of an mRNA strand read by ribosomes during protein synthesis; each codon determines a specific amino acid
Term
Ribosomes
Definition
small structure compound of proteins of RNA
Term
Transcription
Definition
The first step of protein synthesis in which mRNA is synthesized, using a DNA segment (a gene) as a template; Occurs in the nucleus
Term
Translation
Definition
The second step of protein synthesis in which mRNA codons are "read" by ribosomes, and "translated" into an amino acid sequence; occurs in the cytoplasm
Term
Essential Amino Acid
Definition
Amino acids not produced by the body and must be taen in as protein
Term
karyotype
Definition
The chromosomal compolement of an individual; ALso, an organizd arrangement of an individual's chromosomes
Term
Hypothesis
Definition
A statement proposed to explain some phenomenon; framed to be testable/falsifiable
Term
Scientific Method
Definition
Rigorous procedure that is used to identify the most probable explanation for natural phenomena
Term
Haploid
Definition
Term that describes the number of chromosomes in gametes; One-half the full chromosomal complement, or one set of chromosomes
Term
Diploid
Definition
Term that describes the number of chromosomes in somatic cells. 
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