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Mendelian and Multifactorial Traits Quiz

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Mendelian and Multifactorial Traits Quiz

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Questions and Answers

How many pairs of autosomes does a human somatic cell have?

22 (correct)

What does the Y chromosome determine in humans?

Both femaleness and maleness

Maleness (correct)

Femaleness

Non-sex characteristics

What do cells differ in despite containing the entire genome?

Number of chromosomes

Ability to replicate

Appearance and activities (correct)

Location in the body

What structures are formed when DNA molecules wrap tightly around proteins?

Chromosomes (D) Signup and view all the answers

What is a polymorphism as described in the text?

A variant in DNA sequence present in at least 1 percent of a population (B) Signup and view all the answers

What are single nucleotide polymorphisms (SNPs) primarily used for?

Estimating disease risk based on genetic variations (A) Signup and view all the answers

What is the primary focus of genome-wide association studies mentioned in the text?

Tracking combinations of genetic landmarks associated with disorders (B) Signup and view all the answers

How do SNPs differ from mutations as explained in the text?

SNPs mark genetic variations, while mutations can cause diseases (C) Signup and view all the answers

Why is it important to know whether a trait or illness is single-gene or multifactorial?

To determine the risk of occurrence in a particular family member (C) Signup and view all the answers

What makes predicting the recurrence of a multifactorial trait or disorder challenging?

Multiple genes and environmental factors are involved (B) Signup and view all the answers

How does osteoporosis exemplify the complexity of multifactorial diseases?

Several genes and lifestyle factors contribute to it (B) Signup and view all the answers

Why are results of predictive testing for inherited disease presented as risks rather than foregone conclusions?

The environment can modify gene expression (A) Signup and view all the answers

What is one of the fears of biotechnology that Alexis Rockman captures in his art?

Pigs incubating spare parts for sick humans (B) Signup and view all the answers

What does the field of metagenomics aim to reveal and describe?

Interactions between different species (A) Signup and view all the answers

Where was one of the first metagenomics projects conducted to describe life?

Sargasso Sea (A) Signup and view all the answers

What misconception did Christopher Columbus have about the Sargasso Sea?

He mistook the seaweed for abundant fish (A) Signup and view all the answers