Inheritance

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  • Created by: gm1606
  • Created on: 05-05-14 20:55
What is a genotype?
A genotype is the combination of alleles for a particular characteristic (e.g. tongue rolling).
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What is a phenotype?
A phenotype is the term used to describe the fact that an individual is able to, for example, roll their tongue.
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What is an allele?
Genes which code for characteristics occur in pairs. Alternate forms of a gene.
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What does 'homozygous' mean?
Both chromosomes in a pair contain same allele of a gene. Individual described as being 'homozygous' for that gene or condition.
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What does 'heterozygous' mean?
Both chromosomes in a pair contain different alleles of a gene. Individual described as 'heterozygous' for that gene or condition.
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What is monohybrid inheritance?
It is when a characteristic is determined by just one pair of alleles (e.g. tounge rolling TT and blue eyes bb).
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What is the combination of chromosomes for males and females?
XX = female, XY = male
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What is a dominant allele?
The allele that controls the development of a characteristic, even if it is present on only one chromosome in a pair.
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What is a recessive allele?
The allele that controls the development of a characteristic only if a dominant allele is not present (i.e. if recessive allele is present on both chromosomes).
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What chromosomes do egg cells carry?
X
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What chromosomes do sperm carry?
Half carry X, half carry Y
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Other cards in this set

Card 2

Front

What is a phenotype?

Back

A phenotype is the term used to describe the fact that an individual is able to, for example, roll their tongue.

Card 3

Front

What is an allele?

Back

Preview of the front of card 3

Card 4

Front

What does 'homozygous' mean?

Back

Preview of the front of card 4

Card 5

Front

What does 'heterozygous' mean?

Back

Preview of the front of card 5
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