Genetic Inheritance (AQA GCSE Biology): Quizzes
📚Quizzes
Practise the questions
12 questions from this quiz
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Practise the questions
12 questions from this quiz
How many chromosomes does a human gamete contain?
How many chromosomes does a human gamete contain?
23
What type of cell is a gamete?
What type of cell is a gamete?
Haploid cell
What are the proteins called that DNA coils around in a chromosome?
What are the proteins called that DNA coils around in a chromosome?
Histones
Which trait is controlled by a single gene?
Which trait is controlled by a single gene?
Fur colour in mice
How many alleles for each gene do humans inherit from each parent?
How many alleles for each gene do humans inherit from each parent?
One
When is a dominant allele expressed in the phenotype?
When is a dominant allele expressed in the phenotype?
If only one copy is present
When is a recessive allele expressed in the phenotype?
When is a recessive allele expressed in the phenotype?
If two copies are present
Which genotype represents a homozygous condition?
Which genotype represents a homozygous condition?
AA
Which genotype represents a heterozygous condition?
Which genotype represents a heterozygous condition?
Aa
What does phenotype refer to?
What does phenotype refer to?
Observable physical traits
How are dominant traits represented in a Punnett square?
How are dominant traits represented in a Punnett square?
Uppercase letters
In a Bb × Bb cross, what percentage of offspring show the dominant trait?
In a Bb × Bb cross, what percentage of offspring show the dominant trait?
75%