B2 - Cell Division and Inheritance

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  • Created by: 11jc01
  • Created on: 31-03-16 16:18
Chromosome
Long molecule found in the nucleus of all cells; made of DNA
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Gamete
A specialised sex cell formed by meiosis
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Fertilisation
The fusion of the male and female gametes
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Zygote
A cell formed by the fusion of the nuclei of a male sex cell and female sex cell (gametes)
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Mitosis
Cell division that forms to daughter cells, each with the same number of chromosomes as the parent cell
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Meiosis
Cell division that forms daughter cells with half the number of chromosomes of the parent cell
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Gene
Part of a chromosome made up of DNA; controls certain characteristics
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Allele
An alternative form of a particular gene
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Sexual Reproduction
When you individuals are produced that aren't genetically identical to the parents; involving the fusion of gametes
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Dominant
An allele that only needs to be present once in order to be expressed; represented by a capital letter
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Recessive
An allele that will only be expressed if there are two present; represented by a lower case letter
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Genotype (HIGHER TIER)
The combination of alleles an individual has for a particular gene, e.g. BB, Bb or bb
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Heterozygous (HIGHER TIER)
An individual who carries to different copies of the allele, e.g. Bb
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Homozygous (HIGHER TIER)
An individual who carries two copies of the same allele, e.g. BB or bb
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Phenotype (HIGHER TIER)
The expression of the genotype, i.e. the characteristic shown
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Mendel
An Austrian monk who studied inheritance
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Stem cell
A human embryo cell or adult bone marrow cell that has yet to differentiate
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DNA
A.k.a. deoxyribo nucleic acid. Nucleic acid molecules that contain genetic information and make up chromosomes
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Polydactyly
Genetic disorder caused by a dominant allele where people have extra fingers or toes
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Cystic fibrosis
Genetic disorder caused by a recessive allele is affecting cell membranes
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Other cards in this set

Card 2

Front

A specialised sex cell formed by meiosis

Back

Gamete

Card 3

Front

The fusion of the male and female gametes

Back

Preview of the back of card 3

Card 4

Front

A cell formed by the fusion of the nuclei of a male sex cell and female sex cell (gametes)

Back

Preview of the back of card 4

Card 5

Front

Cell division that forms to daughter cells, each with the same number of chromosomes as the parent cell

Back

Preview of the back of card 5
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