Test
Genetics
Este test tiene tipos de pregunta que se abren en el reproductor de siempre.
Preguntas del test (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
Información
- Descripción
- AQA 2016
- Autor
- Joanne North
- Idioma
- English
- Visitas
- 33
- Etiquetas
- Valoración
- Aún sin valoraciones Valora este test