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29 Cards in this Set
- Front
- Back
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What is a Gene?
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a specific sequence of nucleotides in DNA or RNA that is located usually on a chromosome and that is the functional unit of inheritance controlling the transmission and expression of one or more traits by specifying the structure of a particular
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What's an Allele ?
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Any of the alternative forms of a gene that may occur at a given locus
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What's Dominant mean?
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Thats express (showed ; blue eyes)when mixed
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What is recessive?
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Moves down family line
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What is a Homozygous?
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2 genes are the same ; stops the gene
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What is a Heterozygous?
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Carry a gene but may not be effectcive and still effect off spring
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What is a Hemizygous?
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Only have 1 gene for trait
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What is a autosome?
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any chromosome other then a sex chromosome
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What is a Sex chromosome?
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a XX chromosome is a Girl and a XY= chromosome is a Boy
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What is a Punnett Square?
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A diogram used by biologists to determin probability of offy spring havinh particullar genotype
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What is a Probability?
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Is the likelyhood of somthing
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Who was Gregory Mendel?
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He was around during Charles Darwin and conducted experiments about peas and their genetics
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What is a Monohybrid cross?
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a cross between individuals who are identically heterozygous at one locus (Bb,Bb)
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What is a Carrier?
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individual who has the gene for an illness but doesn't have the illness
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Pedigree Chart
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Like a family tree but shows how genetic diseases pass down the generations
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What is a Progeny Line?
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Showing whos your parents on a Pedigree chart
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What is a Marriage Line?
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Shoing whos married to who on a Pedigree chart
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What is a Sibling Line?
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Showing who are brother and sister on a Pedigree chart
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What is a Dihybrid cross?
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a cross between 2 individuals identically heterozygous at 2 loci (AaBb;AaBb)
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What is the Punnett Square method?
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Determin probability of off spring haveing particular genotype
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What is the Tree Method?
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Making 2 diffrent punnett squares then making a tree
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What is Down Syndrome?
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When a baby is born with an extra #21 chromosome
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What is Kleinfelter's ?
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HAving an extra X chromosome in men. Gives the man more femanine charecteristics
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What is Super Female or Trisomy X?
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Doesn't do much to the woman other than give higher chance of Having a Kleinfelters boy.
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What is Cri-du-chat?
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This is when you are missing part of your #5 chromosome. The baby lives usually about a year
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What is Chronic myeloid leukemia?
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When there is a piece missing on the #21 chromosome
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What is super-Male syndrome or XYY ?
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When you are over six feet tall and a slow learner
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What is Turner's Syndrome?
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This is When you are born with only an X chromosome so you end up with chromosomes XO , meaning this only happens to girls
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what is the locus?
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Same location but diffrent charecteristics
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