6847644
Beschreibung
Quiz von Joanne North, aktualisiert more than 1 year ago
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Erstellt von Joanne North
vor etwa 8 Jahre
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Frage 1
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The genetic makeup of an organism.
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Phenotype
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Gene
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Genotype
Frage 2
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The observable or biochemical characteristic of an organism.
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Genotype
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Phenotype
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Gene
Frage 3
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A length of DNA that is a sequence of nucleotide bases that code for a particular polypeptide.
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Phenotype
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Genotype
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Gene
Frage 4
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One of the different forms of a gene.
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Phenotype
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Gene
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Allele
Frage 5
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What is homozygous dominant?
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Where there is two dominant alleles
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Where there is two recessive alleles
Frage 6
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What is homozygous recessive?
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Where there are two dominant alleles
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Where there is a dominant and recessive allele
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Where there is two recessive alleles
Frage 7
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What is a codominant allele?
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Where there is a dominant and recessive allele
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Where two alleles both contribute to the phenotype so both features are represented
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Where the recessive alleles are only present in the phenotype
Frage 8
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Representing Genetic Crosses
1) Choose a single letter to represent each characteristic. This makes it [blank_start]easier as it is in short hand[blank_end].
2) Choose the first letter of one of the contrasting features. This makes it [blank_start]easier to identify which characteristic[blank_end] is being used.
3) Choose a letter which the higher and lower case differs in size and shape. This [blank_start]makes it hard to confuse the letters[blank_end].
4) Higher cases represent the [blank_start]dominant feature[blank_end], lower case letters represent the [blank_start]recessive feature[blank_end].
5) Represent the parents with appropriate pairs of letters and state their [blank_start]phenotypes[blank_end].
6) State the gametes produced and circle them. This [blank_start]reinforces that they are separate[blank_end].
7) Use a [blank_start]Punnett square[blank_end] to show the results of random crossing and label male and female. This makes it [blank_start]less likely to make an error.[blank_end]
8) State the phenotypes of each different genotype and always put the higher case first. This [blank_start]reduces error when reading[blank_end].
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easier as it is in short hand
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easier to identify which characteristic
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makes it hard to confuse the letters
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dominant feature
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recessive feature
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phenotypes
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reinforces that they are separate
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Punnett square
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less likely to make an error.
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reduces error when reading
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