16 Questions
How many pairs of autosomes does a human somatic cell have?
22
What does the Y chromosome determine in humans?
Maleness
What do cells differ in despite containing the entire genome?
Appearance and activities
What structures are formed when DNA molecules wrap tightly around proteins?
Chromosomes
What is a polymorphism as described in the text?
A variant in DNA sequence present in at least 1 percent of a population
What are single nucleotide polymorphisms (SNPs) primarily used for?
Estimating disease risk based on genetic variations
What is the primary focus of genome-wide association studies mentioned in the text?
Tracking combinations of genetic landmarks associated with disorders
How do SNPs differ from mutations as explained in the text?
SNPs mark genetic variations, while mutations can cause diseases
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
What makes predicting the recurrence of a multifactorial trait or disorder challenging?
Multiple genes and environmental factors are involved
How does osteoporosis exemplify the complexity of multifactorial diseases?
Several genes and lifestyle factors contribute to it
Why are results of predictive testing for inherited disease presented as risks rather than foregone conclusions?
The environment can modify gene expression
What is one of the fears of biotechnology that Alexis Rockman captures in his art?
Pigs incubating spare parts for sick humans
What does the field of metagenomics aim to reveal and describe?
Interactions between different species
Where was one of the first metagenomics projects conducted to describe life?
Sargasso Sea
What misconception did Christopher Columbus have about the Sargasso Sea?
He mistook the seaweed for abundant fish
Test your knowledge on Mendelian traits, controlled by a single gene, and multifactorial traits, influenced by multiple genes and environmental factors. Learn to predict the risk of trait occurrence in family members based on genetic inheritance laws.
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