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DNA
| Question | Answer |
|---|---|
| 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
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