Flashcards
Genetics Terminology
Cards in this deck (23)
- 1DominantA gene that alone produces an effect trait in the presence of its partner
- 2RecessiveA gene thats effect (trait) is prevented from being expressed because of the presence of a stronger allele
- 3HomozygousGenes of an allele are the SAME
- 4HeterozygousGenes of an allele are DIFFERENT, one dominant and one recessive
- 5MonohybridCross involving ONE FEATURE
- 6PhenotypeThe physical appearance of an individual
- 7GenotypeGenetic coded makeup of an individual showing a particular character [either heterozygous or homozygous]
- 8P1Parental Generation 1
- 9F1Filial Generation 1 [OFFSPRING]
- 10Who developed theory of how traits are transmitted and recombined in progeny?Gregor Mendel
- 11Which type of allele is indicated by a CAPITAL LETTER?Dominant
- 12Gene PoolTotal number of genes making up the various characteristics necessary in the species of an organism
- 13Natural SelectionMechanism used to select most favourable characteristics for a particular ecosystem or environment
- 14MutationsAny change in the nucleotide sequence of a gene caused by MUTAGENS
- 15Gene MutationA sudden change in the structure of DNA involving one nucleotide
- 16Chromosomal mutationInvolves a change in the number or structure of WHOLE chromosomes - chromosome may be deleted, duplicated, inverted or translocated due to an incorrect breaking of chromatids during crossing over
- 17Non-DisjunctionOccurs during meiosis where sometimes both chromosomes of a homologous pair move to the same pole during ANAPHASE 1
- 18TrisomyZygote contains one extra chromosome
- 19Down SyndromeExtra chromosome number 21
- 20Klinefilter SyndromeExtra X chromosome
- 21MonosomyZygote has one LESS chromosome
- 22Turner SyndromeFemale only has ONE X chromosome
- 23MutagenAnything causing a mutation e.g.. tobacco, nitrous acids, ultra violet light etc.
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- Flashcards on Genetics Terminology, created by Kim Blunden on 07/11/2014.
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- Kim Blunden
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