Practise MYP Biology questions on 5.7 Inheritance and Variation and review the explanations to check your understanding.
Use these questions for topic practice and to find ideas you want to revisit in your notes or lessons.
In the context of Mendel's work, why was the use of large sample sizes considered a key factor in his success?
In Mendel's experiments, what was the typical outcome when crossing two pure-breeding parents with different traits, such as ?
Mendel inferred the existence of 'factors' (genes) long before the discovery of DNA. What was his primary evidence?
The __________ refers to the set of alleles inherited by a sibling, which is derived from the same source as their brothers or sisters.
In a cross between two pure-breeding parents with different versions of a trait (), what percentage of the generation will have the heterozygous genotype?
It allowed him to study many different species at once
It prevented mutations from occurring
It allowed him to see DNA directly
It ensured he could count and analyze statistical ratios accurately
All offspring were homozygous dominant
The offspring were a 50/50 mix of dominant and recessive phenotypes
All offspring displayed the recessive phenotype
All offspring were heterozygous and displayed the dominant phenotype
Consistent and predictable mathematical ratios in offspring
Microscopic images of chromosomes
Observations of bacteria dividing through binary fission
Chemical analysis of nitrogenous bases
Phenotypic ratio
Gene pool
Environmental effect
Recessive factor
75%
25%
50%
100%
