genetics and variation

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  • Created by: feltonz
  • Created on: 07-02-16 16:56
What is a gamete
A sex cell
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How many chromosomes in the human body?
23 pairs of chromosomes
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What are male and female chromosome parings?
Males are XY. Females are XX.
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What are different forms of a gene called?
Genes exist in different forms called alleles.
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Why does a person need to have two copies of the cystic fibrosis allele to have cystic fibrosis?
The allele is recessive
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In a genetic diagram, how is a dominant allele shown?
As a capital letter
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What is heterozygous ?
Someone who is heterozygous contains two different alleles of a gene, such as H and h.
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What is a phenotype?
All the characteristics shown by an organism (visible)
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What is a genotype?
A genotype is all the different genes an organism has.(Not Visible)
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What is an example of continuous variation?
Blood group
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What is an example of discontinuous variation?
Height
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What type of graph do we use for discontinuous variation?
Bar
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What type of graph do we use for continuous variation?
Line
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Other cards in this set

Card 2

Front

How many chromosomes in the human body?

Back

23 pairs of chromosomes

Card 3

Front

What are male and female chromosome parings?

Back

Preview of the front of card 3

Card 4

Front

What are different forms of a gene called?

Back

Preview of the front of card 4

Card 5

Front

Why does a person need to have two copies of the cystic fibrosis allele to have cystic fibrosis?

Back

Preview of the front of card 5
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