20 Questions
What is the function of a gene?
A gene carries genetic information which can be passed from generation to generation.
Where is DNA found in a cell?
DNA is found in the nucleus of a cell, in structures called chromosomes.
How many copies of each gene do humans and most other plants and animals have?
Humans and most other plants and animals have two copies of each gene.
What does a DNA molecule look like?
A DNA molecule looks like a ladder made of two strands twisted around each other with cross-links holding them together, forming a double helix.
What is the characteristic chromosome number called?
The characteristic chromosome number is called the chromosome complement.
What is the purpose of adding ice-cold ethanol in the DNA extraction process?
To make the DNA come out of solution (precipitate)
What is the main purpose of DNA profiling in forensic science?
To create a genetic profile unique to an individual for comparison with DNA found at a crime scene
What technique is used in DNA profiling to separate DNA molecules by size?
Gel electrophoresis
What are some key concerns related to DNA profiling?
Privacy, access to and use of data, wrongful convictions
What is the benefit of DNA profiling mentioned in the text?
Reducing and Reversing Wrongful Convictions
Each gene controls multiple characteristics.
False
All living organisms have the same chromosome number.
False
DNA is not found in the nuclei of plant cells.
False
The two strands of DNA are not twisted together to form a double helix.
False
Inheritance does not involve passing genetic information from one generation to the next.
False
Strawberry cells contain four of every kind of chromosome.
False
In DNA profiling, a genetic profile is created based on the size of DNA molecules.
True
Privacy concerns related to DNA profiling include violation of an individual's civil rights.
True
The function of adding ice-cold ethanol in DNA extraction is to dissolve the DNA.
False
DNA profiling can lead to both reducing and increasing wrongful convictions.
False
Explore the concepts of genes, chromosomes, and inheritance in living organisms. Learn about the structure of chromosomes, the role of genes in carrying genetic information, and how genetic traits are passed down from generation to generation.
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