Genes and Alleles
Biology ⇒ Genetics and Heredity
Genes and Alleles starts at 7 and continues till grade 12.
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See sample questions for grade 11
A woman with genotype Aa marries a man with genotype aa. What is the probability that their child will have genotype Aa?
Describe codominance and provide an example.
Describe the purpose of a test cross in genetics.
Describe the relationship between genes, alleles, and chromosomes.
Explain the concept of a carrier in genetics.
Explain the difference between dominant and recessive alleles.
Explain why recessive genetic disorders are more likely to appear in children of related parents.
If a gene has three alleles in a population, how many different genotypes are possible at that locus?
If a gene has two alleles, A and a, and an individual has the genotype Aa, what is this called?
If both parents are heterozygous for a gene (Aa), what is the probability that their child will be homozygous recessive (aa)?
In pea plants, the allele for tall plants (T) is dominant over the allele for short plants (t). What is the phenotype of a plant with genotype Tt?
What is a gene?
What is a multiple allele system? Give an example.
What is a wild-type allele?
What is meant by the term 'locus' in genetics?
What is meant by the term 'polymorphism' in genetics?
What is the difference between autosomal and sex-linked genes?
What is the difference between genotype and phenotype?
What term is used to describe an organism with two identical alleles for a particular gene?
