Quiz
Genetics
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Questions in this quiz (8)
1Match the definition with the word
The genetic makeup of an organism.- APhenotype
- BGene
- CGenotype
2Match the definition with the word
The observable or biochemical characteristic of an organism.- AGenotype
- BPhenotype
- CGene
3Match the definition to the word
A length of DNA that is a sequence of nucleotide bases that code for a particular polypeptide.- APhenotype
- BGenotype
- CGene
4Match the definition with the word
One of the different forms of a gene.- APhenotype
- BGene
- CAllele
5What is homozygous dominant?
- AWhere there is two dominant alleles
- BWhere there is two recessive alleles
6What is homozygous recessive?
- AWhere there are two dominant alleles
- BWhere there is a dominant and recessive allele
- CWhere there is two recessive alleles
7What is a codominant allele?
- AWhere there is a dominant and recessive allele
- BWhere two alleles both contribute to the phenotype so both features are represented
- CWhere the recessive alleles are only present in the phenotype
8Representing 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].- Aeasier as it is in short hand
- Beasier to identify which characteristic
- Cmakes it hard to confuse the letters
- Ddominant feature
- Erecessive feature
- Fphenotypes
- Greinforces that they are separate
- HPunnett square
- Iless likely to make an error.
- Jreduces error when reading
Information
- Description
- AQA 2016
- Author
- Joanne North
- Language
- English
- Views
- 33
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- Rating
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