Genetic Vocabulary and Punnett Squares Quiz

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Who is known as the 'Father of Modern Genetics'?

Gregor Mendel

What term refers to alternative versions of a gene?


In genetics, what does 'homozygous' mean?

Having a pair of identical alleles for a character

What is the era of molecular genetics characterized by?

Understanding gene expression and regulation

Which project marked the beginning of genomics in the 1990s?

Human Genome Project

What is a recessive gene?

No noticeable effect unless both alleles occur in a gamete

What type of organism is said to be homozygous for a gene?

An organism with two identical alleles

In genetics, what term is used to describe an organism with two different alleles for a gene?


What is the main difference between genotype and phenotype?

Genotype is genetic makeup, while phenotype is physical appearance

Which term describes an individual with a dominant phenotype but unknown genotype?


Why do traits not always reveal an organism's genetic composition?

Because of the different effects of dominant and recessive alleles

What is the purpose of a testcross in genetics?

To determine the genotype of an individual with a dominant phenotype

What did Mendel refer to as a 'heritable factor' in his experiments with pea plants?


Which generation resulted from the self-pollination of the F1 hybrids in Mendel's experiments?

F2 generation

In Mendel's experiments, what is the term used for plants that produce offspring of the same variety when they self-pollinate?

True-breeding plants

Which of the following represents the two alleles for a specific gene located on a chromosome?

Locus and gene

What did Mendel call the pattern where one allele determines the organism's appearance and the other allele has no noticeable effect?

Dominant-recessive inheritance

Which of the following best describes the Law of Segregation proposed by Mendel?

The two alleles for a heritable character separate during gamete formation and end up in different gametes.

What did Mendel's Punnett square diagrams help predict in his genetic crosses?

'Possible combinations' of offspring genotypes

'True-breeding' plants were used by Mendel to:

'Self-pollinate' and keep offspring consistent for genetic study.

'Alternative versions of genes' that account for variations in inherited characters are known as:

'Unit factors'

What term did Mendel use to describe the process of mating two true-breeding varieties?


According to Mendel's laws, which of the following statements is true?

Alleles segregate independently during gamete formation.

What is the purpose of conducting a testcross in genetics?

To determine the genotype of a mystery individual.

In a monohybrid cross, what is the probability that a heterozygous plant will produce offspring with the recessive phenotype?


What type of cross helps determine whether two characters are transmitted to offspring as a package or independently?

Dihybrid cross

Which of the following best describes the concept of independent assortment?

Alleles segregate independently, leading to different combinations of traits in offspring.

How does the multiplication rule apply to monohybrid crosses?

It determines the probability of two independent events occurring together.

What distinguishes a dihybrid cross from a monohybrid cross?

Dihybrid crosses show inheritance patterns for two pairs of contrasting traits.

When applying Mendel's laws to genetics, what does it mean for genes to segregate independently?

Each pair of alleles separates into gametes without influencing each other's segregation.

In a testcross, why is it necessary to breed the mystery individual with a homozygous recessive individual?

To determine if the mystery individual is homozygous dominant or heterozygous.

What outcome does Mendel's law of segregation predict?

Each parent passes on one copy of each gene variant to their offspring.

Test your knowledge on genetic vocabulary and Punnett squares with this quiz. Questions include identifying homozygous and heterozygous genotypes, as well as predicting phenotypic ratios of offspring from different genetic crosses.

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