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DNA

QuestionAnswer
True or False. Because each DNA molecule is composed of two strands, DNA is known as a double helix. True
True or False.Population genetics is the study of the variation in genes among a group of individuals True
True or False. To calculate the percentage of people who have a particular allele, population studies are conducted to collect data True
True or False. Since DNA is evidence that is capable of identifying a specific person, it is known as trace evidence. False
True or False. When the amount of evidence left at a crime scene is very small, it is considered to be individual evidence. False
True or False. STR is a method to make multiple copies of a specific strand of DNA. False
True or False. All humans share 95% of their DNA with each other. False
True or False. Haplo groups can be used to determine the ancestral home of people True
True or False. Toe bones are the part of the skeleton that are most likely to produce a sample of DNA. False
True or False. Gel electrophoresis is a technique that differentiates gene molecules by their mass as they ass through a salted gel solution that has a current running through it. True
True or False. Junk DNA takes up 9.5% of a person's DNA False
True or False. Adenine is always paired with cytosine. False
True or False. Adenine, guanine, thymine, and cytosine are base pairs in DNA True
True or False. Half of the bands in a baby girl's DNA fingerprint are from her uncle. False
True or False. VNTR stands for variable number of tandem repeats. True
Except for identical twins, no two people on earth have the same: a. physical characteristics b. DNA c. blood group d. skeletal type b. DNA
Biological evidence is used in forensics for identification purposes. Biological evidence includes: a. blood b. saliva c. urine d. all of these choices d. all of these choices
The analysis of chromosomes, which was originally developed by geneticists, is known as: a. karyotyping b. genetics c. chromosomes d. none of these choices a. karyotyping
Genetic information is stored in molecules of DNA making up structures called: a. blueprints b. genetic material c. chromosomes d. DNA fingerprinting c. chromosomes
If you tease apart a human chromosome, you will see that it is made yp of: a. one strand of DNA b. two strands of DNA c. three strands of DNA d. four strands of DNA b. two strands of DNA
James Watson and Francis Crick described the structure of DNA--: a. a double helix that resembles a twisted ladder b. a helix that resembles a twisted ladder c. a triple helix that resembles a twisted ladder d. none of these choices a. a double helix that resembles a twisted ladder
In the nucleus of most human body cells, there are: a. 23 pairs of chromosomes b. 46 pairs of chromosomes c 92 chromosomes d. none of these choices a. 23 pairs of chromosomes
DNA in chromosomes is called a. DNA b. DNA chromosomes c. nuclear DNA d. structural DNA c. nuclear DNA
One of two or more alternative forms of a gene is: a. a chromosome b. DNA c. an allele d. RNA c. an allele
DNA sequences that have instructions for making a protein molecule that determines our inherited characteristics or traits such as blood type or enzyme production are: a. alleles b. chromosomes c. genes d. genomes c. genes
The total amount of DNA in a cell, which is contained in chromosomes and mitochondria, is called the human: a. genome b. gene c. allele d. RNA a. genome
The DNA in chromosomes contains approximately: a. 3 million base pairs b. 3 billion base pairs c. 3 thousand base pairs d. one base pair b. 3 billion base pairs
Alec Jeffreys' laboratory developed a technique for isolating and analyzing variable areas that is known as: a. DNA quantifying, or DNA profiling b. DNA fingerprinting, or DNA profiling c. DNA sorting, or DNA profiling b. DNA fingerprinting, or DNA profiling
Within the non-coding sections of DNA, certain short sequences of DNA are repeated a. multiple times b. one time c. two times d. three times d. three times
DNA sequences with a high degree of polymorphism are: a. least useful for DNA analysis b. most useful for DNA analysis c. not useful for DNA analysis d. none of these choices b. most useful for DNA analysis
Molecular scissors that cut DNA at specific base sequences are called restriction enzymes
The method of separating the molecules within an electric field, based on their size, is called electromorphus
A molecule labeled with a radioactive isotope, dye or enzyme, that is used to locate a particular sequence or gene on a DNA molecule, is called a DNA probe
A method used to rapidly make multiple copies of a specific segment of DNA is called PSR
Tandem repeats of short DNA sequences (2-5 pairs) with varying numbers of repeats between individuals is called STR
Why is DNA considered individual evidence? Because everyone except twins have different DNA
How can a person with blue eyes have two biological parents with brown eyes? If both parents are heterozygous for brown eyes
Can a person with brown eyes have two biological parents with blue eyes? Why or why not? No, because they can only give a blue gene.
Created by: rachael2019