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MYP Integrated Sciences Topic Inheritance and… | RevisionDojo

MYP Integrated Sciences Inheritance and Variation Questionbank

Question 1

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In the context of Mendel's work, why was the use of large sample sizes considered a key factor in his success?

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

Question 2

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In Mendel's experiments, what was the typical outcome when crossing two pure-breeding parents with different traits, such as ${RR} \times {rr}$ ?

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

Question 3

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Mendel inferred the existence of 'factors' (genes) long before the discovery of DNA. What was his primary evidence?

Consistent and predictable mathematical ratios in offspring

Microscopic images of chromosomes

Observations of bacteria dividing through binary fission

Chemical analysis of nitrogenous bases

Question 4

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The __________ refers to the set of alleles inherited by a sibling, which is derived from the same source as their brothers or sisters.

Phenotypic ratio

Gene pool

Environmental effect

Recessive factor

Question 5

View answer

In a cross between two pure-breeding parents with different versions of a trait ( ${RR} \times {rr}$ ), what percentage of the ${F_1}$ generation will have the heterozygous genotype?

75%

25%

50%

100%

Unlock all 25 questions with a free account

Practice MYP MYP Integrated Sciences Topic Inheritance and Variation with authentic exam-style questions for both SL and HL students. This question bank focuses on the exact syllabus content for Inheritance and Variation and mirrors Paper 1, 2 style where relevant.

Get instant solutions, detailed explanations, and build confidence with questions aligned to MYP examiner expectations.

Question 1

View answer

In the context of Mendel's work, why was the use of large sample sizes considered a key factor in his success?

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

Question 2

View answer

In Mendel's experiments, what was the typical outcome when crossing two pure-breeding parents with different traits, such as ${RR} \times {rr}$ ?

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

Question 3

View answer

Mendel inferred the existence of 'factors' (genes) long before the discovery of DNA. What was his primary evidence?

Consistent and predictable mathematical ratios in offspring

Microscopic images of chromosomes

Observations of bacteria dividing through binary fission

Chemical analysis of nitrogenous bases

Question 4

View answer

The __________ refers to the set of alleles inherited by a sibling, which is derived from the same source as their brothers or sisters.

Phenotypic ratio

Gene pool

Environmental effect

Recessive factor

Question 5

View answer

In a cross between two pure-breeding parents with different versions of a trait ( ${RR} \times {rr}$ ), what percentage of the ${F_1}$ generation will have the heterozygous genotype?

75%

25%

50%

100%

Unlock all 25 questions with a free account

Get instant solutions, detailed explanations, and build confidence with questions aligned to MYP examiner expectations.

MYP Integrated Sciences Inheritance and Variation Questionbank

MYP Integrated Sciences Inheritance and Variation Questionbank

Unlock all 25 questions with a free account

MYP MYP Integrated Sciences Topic Inheritance and Variation Questionbank

Unlock all 25 questions with a free account

MYP MYP Integrated Sciences Topic Inheritance and Variation Questionbank