B1.7 flash cards revision- Genes and inheritance 0.0 / 5 ? BiologyVariation and reproductionGCSEAQA Created by: melisaCreated on: 16-09-13 22:07 Where in a body's cells are chromosomes found? Chromosomes are found in the nucleus 1 of 10 Which of these is the largest? Chromosomes are the largest. 2 of 10 What is the unit of inheritance called? The unit of inheritance is called the gene. 3 of 10 What are alleles? Alleles are different forms of a gene. 4 of 10 To have cystic fibrosis, how many faulty alleles must an individual have inherited from their parents? Two - one from their father and one from their mother. 5 of 10 Which of the following human characteristics is caused by environmental variation? The language a human speaks is caused by environmental variation. 6 of 10 Identical twins are very similar to each other, mainly because they have identical genetic information 7 of 10 You only need one copy of the faulty allele to have Huntington's disease. This means the allele is: dominant. 8 of 10 Which statement about the inheritance of gender is correct? Sperm cells can carry X or Y chromosomes. 9 of 10 Human body cells each contain: Human body cells each contain 23 pairs of chromosomes. 10 of 10
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