Genes and Alleles
Biology ⇒ Genetics and Heredity
Genes and Alleles starts at 7 and continues till grade 12.
QuestionsToday has an evolving set of questions to continuously challenge students so that their knowledge grows in Genes and Alleles.
How you perform is determined by your score and the time you take.
When you play a quiz, your answers are evaluated in concept instead of actual words and definitions used.
See sample questions for grade 10
A plant with genotype Tt is crossed with another plant with genotype Tt. What is the probability that the offspring will have the genotype tt?
A woman with genotype Aa marries a man with genotype aa. What is the probability that their child will have genotype aa?
Describe what is meant by the term 'dominant allele'.
Explain the difference between autosomal and sex-linked genes.
Explain why some traits do not follow simple dominant-recessive inheritance patterns.
If a gene has two alleles, A (dominant) and a (recessive), what is the phenotype of an individual with genotype Aa?
If a gene is located on the X chromosome, what is this type of inheritance called?
If both parents are heterozygous for a gene (Rr), what is the expected genotypic ratio among their offspring?
In humans, the gene for blood type has three alleles: IA, IB, and i. How many alleles does an individual inherit for this gene?
In snapdragons, red flowers (RR) crossed with white flowers (WW) produce pink flowers (RW). What type of inheritance is this?
What is a carrier in genetics?
What is a gene?
What is a mutation?
What is an allele?
What is codominance?
What is incomplete dominance?
What is meant by the term 'multiple alleles'?
What is meant by the term 'wild-type allele'?
What is the difference between genotype and phenotype?
