Fichas
Genetics
Fichas del conjunto (22)
- 1MeiosisProcess of making gametes (4 genetically different cells from one parent cell);occurs in two different phases (I or II)
- 2HaploidCell that contains only one copy of a chromosome set (23 chromosomes in human gametes)
- 3DiploidCell with PAIRS of homologous chromosomes (46 total chromosomes in humans)
- 4GameteSex cell (sperm or egg) - always haploid, so when combined together a diploid organism is created
- 5Crossing OverOccurs in prophase I of meiosis; genes are exchanged between two chromosomes, which leads to genetic diversity (reason why the 4 daughter cells are genetically different)
- 6GeneSegment of repeating nucleotides in DNA that codes for a trait
- 7AlleleAlternative form of a gene located at a specific point in a chromosome (Hh has two different alleles:H and h)
- 8Dominant TraitTrait that appears over a recessive form when both are present
- 9Recessive traitA trait that does not appear unless the dominant trait is absent (cc represents an individual who has Cystic Fibrosis, which is recessive)
- 10HomozygousTwo identical alleles (HH or hh); Homo=Same
- 11HeterozygousTwo non-identical alleles (Hh); Herero=Different
- 12CarrierAn individual who has an allele for a recessive trait, but does not express it because a dominant one overrules it (Cc is a carrier of Cystic Fibrosis, a recessive condition)
- 13GenotypeGENetic make up of a trait (RR, Rr, or rr)
- 14PhenotypePHysical appearance of a trait (round or wrinkled peas)
- 15punnet squareA diagram/chart used to predict the outcome of a certian pair of mating individuals based on one trait (AKA: monohybrid cross)
- 16PedigreeGraphic diagram showing a relationship within a family (circles=females and squares=males; shaded=affected by a certain trait and unshaded=not affected)
- 17Co-dominaceBoth alleles show dominace in true form (red+white=splotchy red and white
- 18Incomplete dominaceNeither alleles is completely domnant over the other, so they blind together (red+white=pink)
- 19Sex-linked traittrait carried by the X chromosome, which causes the trait to appear most often in males when the Y chromosome is incapable of showing dominace over the trait
- 20NondisjunctionFailure of a chromosome to seperate; causes genetic disorders
- 21Down syndrome(trisomy 21) occurs when an individual has 3 chromsomes on the 21st pair instead of 2;caused by NONDISJUNCTION
- 22KaryotypePictogaphic spread of an individual's chromosomes grouped in homologous pairs; all normal humans have 46
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- Descripción
- Note cards for Biology honors booklets for study and review
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- WolfAngel2011
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