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Meiosis & adaptation

Unit 1&2 VCE Biology

TermDefinition
behavioural adaptation type of adaptation where the actions of an organism change, helping it to survive in its environment
mutualism symbiotic relationship where both organisms benefit
crossing over the exchange of chromosomal material between non-sister chromatids of homologous chromosomes during prophase I of meiosis
haploid number having one set of chromosomes (n), occurs in all gametes
structural adaptation type of adaptation where the physical features of an organism change, helping it to survive in its environment
commensalism symbiotic relationship where one organism benefits and the other organism is not affected
nondisjunction failure of sister chromatids or homologous chromosomes to separate properly during meiosis
independent assortment random arrangement of maternal and paternal copies of homologous chromosomes during metaphase I
somatic cell every cell in an organism except gametes, always diploid
physiological adaptation type of adaptation where the internal/cellular features of an organism change, helping it to survive in its environment
diploid number having two sets of chromosomes (2n), occurs in all somatic cells
gametes haploid cell capable of fusing with another haploid cell to form a zygote
homologous pair matching pair (of chromosomes)
parasitism symbiotic relationship where one organism benefits and the other organism is harmed
random fertilisation method of increasing genetic variation where it is by chance that a particular sperm fertilises a particular egg
meiosis type of cell division in eukaryotic cells, produces 4 genetically different haploid daughter cells from 1 diploid parent cell
asexual reproduction reproduction involving only one parent, offspring are genetically identical to the parent
genetic variation difference in DNA sequences between individuals within a population
sexual reproduction reproduction involving two parents, offspring are genetically different to the parents
Created by: BiologyBright
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