Consider a gene with four alleles A1, A2, A3, and A4. How many distinct homozygous genotypes are possible?

A) 2 B) 3 C) 4 D) 5 E) 6 A) 2 B) 3 C) 4 D) 5 E) 6

Consider a gene with four alleles A1, A2, A3, and A4. In the cross A1A2 × A3A4, how many offspring genotypes are possible?

A) 2 B) 3 C) 4 D) 5 E) 6 A) 2 B) 3 C) 4 D) 5 E) 6

Exam 16: Mendelian Inheritance

You are examining a human pedigree for a trait. You notice that an offspring can be affected even if neither parent is affected. This immediately tells you that the trait is:

(Multiple Choice)

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Question 181

Consider a gene with n alleles A₁, A₂, ..., A_n. How many distinct genotypes are possible, taking into account both homozygous and heterozygous genotypes?

(Multiple Choice)

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Question 182

Consider a gene with four alleles A₁, A₂, A₃, and A₄. How many distinct homozygous genotypes are possible?

(Multiple Choice)

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Question 183

In genetics, the dash symbol (-) is a "wild card" that stands for either the dominant allele or the recessive allele; for example, A- means the individual has either the genotype AA or Aa. Two genes that undergo independent assortment affect coat color in the house mouse. Each gene has two alleles, one of which is dominant for coat color. Genotypes of the form A- B- have a brownish color called agouti, those of the form A- bb are black, and those of the form aa B- and aa bb are albino (white). What ratio of agouti : black : white is expected from the cross Aa Bb × Aa Bb?

(Multiple Choice)

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Question 184

Imagine that you are standing next to Aristotle in early Greece. You both see an older, balding man with visible age spots on his skin. This man also appears to be a wounded soldier, whose left leg has been amputated. What might Aristotle say to you?

(Multiple Choice)

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Question 185

A true-breeding black rabbit is crossed with a true-breeding white rabbit to produce an F₁ generation of 15 individuals. If the black color trait is dominant, which of the following represents the expected phenotype of an F₁ generation cross?

(Multiple Choice)

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Question 186

A testcross of an organism of unknown genotype is done when the organism is crossed with an organism that is:

(Multiple Choice)

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Question 187

What is the probability that an individual is Aa or AA if his or her parents are both heterozygous for the trait?

(Multiple Choice)

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Question 188

Consider a gene with six alleles A₁, A₂, A₃, A₄, A₅, and A₆. How many distinct genotypes are possible, taking into account both homozygous and heterozygous genotypes?

(Multiple Choice)

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Question 189

Consider a gene with four alleles A₁, A₂, A₃, and A₄. In the cross A₁A₂ × A₃A₄, how many offspring genotypes are possible?

(Multiple Choice)

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Question 190

Which of the following represents the expected genotypes of an F₂ generation consisting of 8 individuals from an initial cross of a true-breeding black (BB) rabbit and a true-breeding white (bb) rabbit?

(Multiple Choice)

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Question 191

Showing 181 - 191 of 191

Exam 16: Mendelian Inheritance

You are examining a human pedigree for a trait. You notice that an offspring can be affected even if neither parent is affected. This immediately tells you that the trait is:

Consider a gene with n alleles A1, A2, ..., An. How many distinct genotypes are possible, taking into account both homozygous and heterozygous genotypes?

Consider a gene with four alleles A1, A2, A3, and A4. How many distinct homozygous genotypes are possible?

Imagine that you are standing next to Aristotle in early Greece. You both see an older, balding man with visible age spots on his skin. This man also appears to be a wounded soldier, whose left leg has been amputated. What might Aristotle say to you?

A true-breeding black rabbit is crossed with a true-breeding white rabbit to produce an F1 generation of 15 individuals. If the black color trait is dominant, which of the following represents the expected phenotype of an F1 generation cross?

A testcross of an organism of unknown genotype is done when the organism is crossed with an organism that is:

What is the probability that an individual is Aa or AA if his or her parents are both heterozygous for the trait?

Consider a gene with six alleles A1, A2, A3, A4, A5, and A6. How many distinct genotypes are possible, taking into account both homozygous and heterozygous genotypes?

Consider a gene with four alleles A1, A2, A3, and A4. In the cross A1A2 × A3A4, how many offspring genotypes are possible?

Which of the following represents the expected genotypes of an F2 generation consisting of 8 individuals from an initial cross of a true-breeding black (BB) rabbit and a true-breeding white (bb) rabbit?

Life: Chemical, Cellular, and Evolutionary Foundations

The Molecules of Life

Nucleic Acids and Transcription

Translation and Protein Structure

Organizing Principles: Lipids, Membranes, and Cell Compartments

Making Life Work: Capturing and Using Energy

Cellular Respiration: Harvesting Energy From Carbohydrates and Other Fuel Molecules

Photosynthesis: Using Sunlight to Build Carbohydrates

Cell Signaling

Cell and Tissue Architecture: Cytoskeleton, Cell Junctions, and Extracellular Matrix

Cell Division: Variations, Regulation, and Cancer

Dna Replication and Manipulation

Genomes

Mutation and Dna Repair

Genetic Variation

Inheritance of Sex Chromosomes, Linked Genes, and Organelles

The Genetic and Environmental Basis of Complex Traits

Genetic and Epigenetic Regulation

Genes and Development

Evolution: How Genotypes and Phenotypes Change Over Time

Species and Speciation

Evolutionary Patterns: Phylogeny and Fossils

Human Origins and Evolution

Cycling Carbon

Bacteria and Archaea

Eukaryotic Cells: Origins and Diversity

Being Multicellular

Plant Structure and Function: Moving Photosynthesis Onto Land

Plant Reproduction: Finding Mates and Dispersing Young

Plant Growth and Development

Plant Defense: Keeping the World Green

Plant Diversity

Fungi: Structure, Function, and Diversity

Animal Nervous Systems

Animal Sensory Systems and Brain Function

Animal Movement: Muscles and Skeletons

Animal Endocrine Systems

Animal Cardiovascular and Respiratory Systems

Animal Metabolism, Nutrition, and Digestion

Animal Renal Systems: Water and Waste

Animal Reproduction and Development

Animal Immune Systems

Animal Diversity

Animal Behavior

Population Ecology

Species Interactions, Communities, and Ecosystems

Biomes and Global Ecology

The Anthropocene: Humans As a Planetary Force

Filters

Consider a gene with n alleles A₁, A₂, ..., A_n. How many distinct genotypes are possible, taking into account both homozygous and heterozygous genotypes?

Consider a gene with four alleles A₁, A₂, A₃, and A₄. How many distinct homozygous genotypes are possible?

A true-breeding black rabbit is crossed with a true-breeding white rabbit to produce an F₁ generation of 15 individuals. If the black color trait is dominant, which of the following represents the expected phenotype of an F₁ generation cross?

Consider a gene with six alleles A₁, A₂, A₃, A₄, A₅, and A₆. How many distinct genotypes are possible, taking into account both homozygous and heterozygous genotypes?

Consider a gene with four alleles A₁, A₂, A₃, and A₄. In the cross A₁A₂ × A₃A₄, how many offspring genotypes are possible?

Which of the following represents the expected genotypes of an F₂ generation consisting of 8 individuals from an initial cross of a true-breeding black (BB) rabbit and a true-breeding white (bb) rabbit?