B1.7 flash cards revision- Genes and inheritance

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  • Created by: melisa
  • Created on: 16-09-13 22:07
Where in a body's cells are chromosomes found?
Chromosomes are found in the nucleus
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Which of these is the largest?
Chromosomes are the largest.
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What is the unit of inheritance called?
The unit of inheritance is called the gene.
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What are alleles?
Alleles are different forms of a gene.
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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.
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Which of the following human characteristics is caused by environmental variation?
The language a human speaks is caused by environmental variation.
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Identical twins are very similar to each other, mainly because
they have identical genetic information
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You only need one copy of the faulty allele to have Huntington's disease. This means the allele is:
dominant.
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Which statement about the inheritance of gender is correct?
Sperm cells can carry X or Y chromosomes.
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Human body cells each contain:
Human body cells each contain 23 pairs of chromosomes.
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Other cards in this set

Card 2

Front

Which of these is the largest?

Back

Chromosomes are the largest.

Card 3

Front

What is the unit of inheritance called?

Back

Preview of the front of card 3

Card 4

Front

What are alleles?

Back

Preview of the front of card 4

Card 5

Front

To have cystic fibrosis, how many faulty alleles must an individual have inherited from their parents?

Back

Preview of the front of card 5
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