1) Alleles a) Cell division for growth and repair b) Alternative versions of a gene c) Chromosomes with the same genes d) A fertilised egg 2) Gene a) Cell division for growth and repair b) A sex cell (eg sperm, ovum, pollen, ovule) c) A permanent change in the base sequence of DNA d) Section of DNA that codes for a particular protein/characteristic 3) Mutation a) A permanent change in the base sequence of DNA b) The allele that is always expressed when present c) The two alleles of a gene are the same d) Section of DNA that codes for a particular protein/characteristic 4) Meiosis a) The allele that is always expressed when present b) The two alleles of a gene are different c) A fertilised egg d) Cell division to produce gametes in sexual reproduction 5) Mitosis a) A permanent change in the base sequence of DNA b) Cell division for growth and repair c) Thread-like structures made of DNA that carry the code to make proteins d) The allele that is always expressed when present 6) Genotype a) The allele that is always expressed when present b) A fertilised egg c) Thread-like structures made of DNA that carry the code to make proteins d) The two alleles the person has for a gene 7) Phenotype a) Cell division for growth and repair b) The physical characteristic or feature c) Section of DNA that codes for a particular protein/characteristic d) Alternative versions of a gene 8) Dominant Allele a) Cell division for growth and repair b) Thread-like structures made of DNA that carry the code to make proteins c) The two alleles the person has for a gene d) The allele that is always expressed when present 9) Recessive Allele a) Cell division for growth and repair b) The allele which is only expressed if the dominant allele is not present c) A sex cell (eg sperm, ovum, pollen, ovule) d) The physical characteristic or feature 10) Homozygous a) Alternative versions of a gene b) The allele that is always expressed when present c) The two alleles of a gene are the same d) When a male and female gamete fuse to form a zygote 11) Heterozygous a) The two alleles of a gene are different b) The two alleles of a gene are the same c) The physical characteristic or feature d) A sex cell (eg sperm, ovum, pollen, ovule) 12) Chromosomes a) Thread-like structures made of DNA that carry the code to make proteins b) A sex cell (eg sperm, ovum, pollen, ovule) c) Cell division for growth and repair d) The two alleles of a gene are different 13) Homologous Chromosomes a) The two alleles of a gene are the same b) The allele which is only expressed if the dominant allele is not present c) Chromosomes with the same genes d) The allele that is always expressed when present 14) What does STR stand for? a) Series Total Range b) Short Tandem Repeat c) Short Total Range d) Series of Total Repair 15) What proportion of DNA is identical in all humans? a) 95% b) 50% c) 99.8% d) All DNA is unique 16) What are the DNA base pairs a) A-U and C-T b) A-T and G-C c) C-T and A-G 17) What is a gene? a) The whole DNA code?  b) A chromosome c) One allele d) A segment of DNA coding for a trait 18) Deoxyribose a) Sugar in DNA b) Protein in DNA c) Amino acid in DNA

Forensic Genetics Refresher

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