1) Which of these women’s cells contains only one X chromosome? a) a skin cell b) a liver cell c) an egg cell d) a nerve cell 2) What are different forms of the same gene called? a) DNA b) Alleles c) Chromosomes d) Genes 3) The name given to an allele that is hidden or covered up by another one? a) Dominant b) Genotype c) Phenotype d) Recessive 4) Would a person with two X chromosomes be male or female? a) Male b) Female 5) There are 42 of these in a human nucleus. a) Chromosomes b) DNA c) Genes d) Alleles 6) The biological word that describes a male and female sex cell joining together. a) Zygote b) Chromosome c) Fertilisation d) Genotype 7) Which of these is not an inherited characteristic? a) finger nail length b) eye colour c) height d) nose length 8) If allele t = a non tongue roller and T a tongue roller, what will a person with the genotype Tt be? a) non tongue roller b) Tongue roller c) Neither d) Both 9) How many pairs of human chromosomes are there? a) 4 b) 46 c) 23 d) 10 10) If B is the allele for black hair and b is brown, what hair colour will a person with bb have? a) Can’t tell b) Black c) Brown d) Black and Brown 11) The Y chromosome determines a child’s sex, if there was no Y chromosome what sex would the child be? a) Girl b) Boy 12) Dave has the alleles bb for hair colour. bb is known as his: a) Genotype b) Phenotype c) Chromosome d) Nucleus 13) Dave has the alleles bb for hair colour. This means he has brown hair. Brown hair is known as his: a) Genotype b) Phenotype c) Chromosome d) Nucleus 14) Which one of these is the smallest? a) Chromosome b) Gene c) Nucleus d) Sex cell 15) Which one of these is the largest? a) Chromosome b) Gene c) Nucleus d) Sex cell 16) What does PGD stand for? a) Prenatal Genetic Disorder b) Personal Genetic Diagnostics c) Pre-diagnostic Genetic Disorder d) Pre-implantation Genetic Diagnosis 17) What is the next step in embryo selection? 1. Collect eggs and sperm from parents 2. Fertilise eggs with sperm to produce zygotes 3. Remove 1 cell from each of the embryos for testing a) Give the women fertility drugs. b) Test the cells removed using genetic testing machines c) Implant a healthy embryo into the perspective mother

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