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6751705
Genetics NCEA Level 1- 90948
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Genetics
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science
ncea level 1
Mind Map by
Emma Warmerdam
, updated more than 1 year ago
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Created by
Emma Warmerdam
about 8 years ago
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Resource summary
Genetics NCEA Level 1- 90948
Cell division
Mitosis for growth and repair. 46 chromosomes in each cell. 2 genetically indenticaldaughter cells.
Meiosis produces gametes needed for sexual reproduction. 23 chromosomes in each cell. 4 genetically unique daughter cells.
DNA, chromosomes, genes and alleles
DNA, a molecule found in the nucleus of cells made of nucleotides, which codes for an individual's genes. It can self-replicate.
Nucleotide
Chromosomes, thread-like structures made of wound up DNA. Come in pairs 46 in each human cell
Genes, a section of DNA that codes for a protein.
Allele, an alternative form of a gene can be dominant or recessive. Each characteristic has 2
Reproduction
Asexual, advantages- fast,easy, disadvantages-no variation
Sexual, advantages- variation, disadvantages- slower, harder
Variation
Causes- Sexual reproduction, meiosis (random assortment), mutations, environment.
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