Inheritance: The process by which genetic information is passed on from parent to child

This is an MCQ-based quiz for GRE on the topic of Inheritance.

This includes Autosomal Dominant Inheritance, Autosomal Recessive Inheritance, X-linked Inheritance, and Complex Inheritance.

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What type of prokaryotic genetic recombination requires the presence of plasmids?

Transduction Transformation Conjugation Binary fission

Which recombinant process depends on a F factor plasmid?

Conjugation Translocation Transformation Transduction

Frederick Griffith"s experiments showed that formerly harmless IIR bacteria had become deadly in mice. This change took place when the harmless IIR bacteria were exposed to the remains of heat killed IIIS bacteria. Based on this experiment, what was the process that converted the harmless bacteria to a deadly strain?

Conjugation Transduction Binary fission Transformation Mutation

Which answer choice correctly pairs the mode of bacterial genetic transfer with its definition?

Transformation—a bacterial cell directly transmits part of its F plasmid to another bacterium via a bridgelike structure called a pilus Conjugation—a bacterium picks up a piece of genetic material from its external environment Transformation—a bacteriophage picks up genetic material from one bacterium and then infects another, transferring the material to the second cell Transduction—a bacterium picks up a piece of genetic material from its external environment Transduction—a bacteriophage picks up genetic material from one bacterium and then infects another, transferring the material to the second cell

A scientist is working with a breed of dog and has noticed that two traits, ear length and color, behave in normal dominant-recessive hierarchies. Long ears (A) are dominant to short ears (a) and black coloration (B) is dominant to yellow coloration (b). If he breeds a long eared, black dog (AaBb) with a short eared yellow dog (aabb), what would be the resulting phenotypic ratios of the offspring?

1 long ears, black : 1 long ears, yellow : 1 short ears, black : 1 short ears, yellow 9 long ears, black : 3 long ears, yellow : 3 short ears, black : 1 short ears, yellow 9 long ears, black : 3 long ears, yellow : 4 short ears, black 15 long ears, black : 1 short ears, yellow

Which of the following inheritance patterns only requires a single copy of a mutant allele for presentation of a specific gene disorder?

Complex inheritance Autosomal dominant inheritance Mendelian inheritance X-linked recessive inheritance Autosomal recessive inheritance

Which of the following statements about autosomal-dominant disorders is false?

An individual's risk of inheriting an autosomal dominant disorder is independent from whether or not their sibling has the disorder There is often a great deal of variability in the severity of the phenotype associated with an autosomal dominant disorder An individual with an autosomal dominant mutation has a 50% chance of passing it to their offspring Male and female individuals have the same chance of being affected If an individual does not have the disorder, they can still pass on the mutant gene if one of their parents has the disorder

Two parents are heterozygous for an allele that determines hair color for this species. These parents have offspring with the following genotypic ratios: 50% Bb, 25% BB, 25% bb The B allele produces black hair, and the b allele produces white hair. However, the phenotypic expression of this gene"s traits do not follow Mendelian patterns. If allele B exhibits incomplete dominance, which of the following is true for the offspring?

All three genotypes produce black hair All three genotypes (BB, bb, Bb) produce a different hair color phenotype All three genotypes produce an intermediate phenotype There is not enough information provided to determine the offspring phenotypes The homozygotes will have black hair, and the heterozygotes will have gray hair

Which of the following is false about conjugation?
I. It is a form of sexual reproduction
II. It forms a bridge between two bacterial cells; the bridge is called a plasmid
III. It involves transport of genetic material via vectors

II only

I and II

I only

II and III

Which of the following choices represents information contained in a punnett square?
I. Potential genotype ratios of offspring
II. Possible gametes produced by parent generation
III. Allele frequencies of the population

I, II, and III

I only

I and II

II and III

Quiz/Test Summary

Title: Inheritance: The process by which genetic information is passed on from parent to child

Questions: 10

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