Podcast
Questions and Answers
Which type of DNA can only link individuals by maternal lineage?
Which type of DNA can only link individuals by maternal lineage?
- Mitochondrial DNA (correct)
- None of the above
- Both nuclear and mitochondrial DNA
- Nuclear DNA
True or false: Mitochondrial DNA can link individuals by paternal lineage.
True or false: Mitochondrial DNA can link individuals by paternal lineage.
False (B)
Which type of DNA is more prevalent and stable, and can only link individuals by maternal lineage?
Which type of DNA is more prevalent and stable, and can only link individuals by maternal lineage?
- Mitochondrial DNA (correct)
- None of the above
- Nuclear DNA
- Both A and B
How long did the human genome project take to map out the human genome?
How long did the human genome project take to map out the human genome?
True or false: The human genome project took less than 5 years to map out the human genome.
True or false: The human genome project took less than 5 years to map out the human genome.
How many years did it take to map out the human genome through the human genome project?
How many years did it take to map out the human genome through the human genome project?
True or false: All cells contain 46 pairs of chromosomes located in the nucleus.
True or false: All cells contain 46 pairs of chromosomes located in the nucleus.
How many pairs of chromosomes are located in the nucleus of cells?
How many pairs of chromosomes are located in the nucleus of cells?
How many pairs of chromosomes are located in the nucleus of cells?
How many pairs of chromosomes are located in the nucleus of cells?
True or false: Genes are not composed of DNA.
True or false: Genes are not composed of DNA.
Which chromosomes are present in females?
Which chromosomes are present in females?
Which chromosomes are present in females and males respectively?
Which chromosomes are present in females and males respectively?
What are genes composed of?
What are genes composed of?
What are genes composed of and what do they create?
What are genes composed of and what do they create?
True or false: Tandem repeats make up less than 30% of DNA strands.
True or false: Tandem repeats make up less than 30% of DNA strands.
What is the technique for replicating or copying DNA strands called?
What is the technique for replicating or copying DNA strands called?
What is the technique used for replicating or copying DNA strands?
What is the technique used for replicating or copying DNA strands?
True or false: Polymerase chain reaction (PCR) is a technique for cutting DNA strands.
True or false: Polymerase chain reaction (PCR) is a technique for cutting DNA strands.
What percentage of DNA strands are tandem repeats?
What percentage of DNA strands are tandem repeats?
True or false: Hair characteristics can only be compared through morphological analysis.
True or false: Hair characteristics can only be compared through morphological analysis.
What percentage of DNA strands are tandem repeats?
What percentage of DNA strands are tandem repeats?
What are the two methods to test hair characteristics?
What are the two methods to test hair characteristics?
Which method is the best to test hair?
Which method is the best to test hair?
True or false: DNA analysis is not necessary to test hair.
True or false: DNA analysis is not necessary to test hair.
What are the three phases of hair growth?
What are the three phases of hair growth?
How many phases does hair growth occur in?
How many phases does hair growth occur in?
True or false: Hair growth occurs in four phases: anagen, catagen, telogen, and exogen.
True or false: Hair growth occurs in four phases: anagen, catagen, telogen, and exogen.
Which type of DNA is found in both plants and animals?
Which type of DNA is found in both plants and animals?
True or false: Only animals have DNA, and plants do not.
True or false: Only animals have DNA, and plants do not.
Which type of DNA is found in both plants and animals?
Which type of DNA is found in both plants and animals?
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Study Notes
- DNA is found in both plants and animals, with two types being nuclear and mitochondrial.
- Mitochondrial DNA is more prevalent and stable, and can only link individuals by maternal lineage.
- The human genome project mapped out the human genome over 13 years.
- Cells contain 23 pairs of chromosomes located in the nucleus, with XX chromosomes in females and XY in males.
- Genes are composed of DNA and create thousands of different proteins.
- DNA strands can have millions of bases, with 30% being tandem repeats.
- Polymerase chain reaction (PCR) is a technique for replicating or copying DNA strands.
- Hair characteristics vary by body part and race, and can be compared through morphological or DNA analysis.
- Morphological analysis is presumptive in nature, and DNA analysis is the best method to test hair.
- Hair growth occurs in three phases: anagen, catagen, and telogen.
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