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30 Cards in this Set
- Front
- Back
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A normal human cell has ... |
22 pairs of autosomes and at least one X chromosome |
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The goal of the human genome project was to ... |
Sequence all the bases in a human genome |
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The X and Y chromosomes are known as the ... |
Sex chromosomes |
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Most of the human genome is composed of ... |
Sequences of unknown function |
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Are located on the same chromosome Can segregate together during meiosis Can be close together on the same chromosome |
Linked Genes |
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Most sex-linked genes are on the ___ chromosome |
X chromosome |
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Genes on non-homologous chromosomes have a ___ percent chance of ending up in different gametes |
50% |
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A linkage map shows ... |
The location of genes on a chromosome |
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The ___ the frequency of crossing-over, the closer together on the same chromosome genes are presumed to be |
Lower the frequency |
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Autosomes are ___ that contain genes for characteristics that are unrelated to sex |
Chromosomes |
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Which of the following statements is correct concerning autosomal traits? 1.) Autosomal traits are controlled by genes on one of the 22 autosomes. 2.) Earlobe attachment is an autosomal trait. 3.) Red-green color blindness is an autosomal trait. |
1.) Autosomal traits are controlled by genes on one of the 22 autosomes 2.) Earlobe attachment is an autosomal trait |
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___ and ___ are dominant traits controlled by a single autosomal gene? |
1.) Widow's peak 2.) Hitchhiker's thumb |
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Why are recessive X-linked alleles always expressed in males |
Because males only have one X chromosome |
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Which disorder results from an abnormal hemoglobin protein in red blood cells? |
Sickle Cell Anemia |
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___ is an example of a multiple allele trait? |
ABO blood type |
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Nondisjunction of chromosome 21 may result in ... |
Down syndrome |
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Mutations in a collagen gene affect bones, the ears, and the eyes. This is an example of ... |
Pleiotropy |
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A mother has red-green color blindness. Her husband is not affected. What happens? |
All of their sons will have red-green color blindness |
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Human skin color and weight are both polygenic traits. A graph of these traits would have ... |
A bell-shaped distribution |
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ABO blood type is a multiple allele trait. What is NOT a blood type? |
BO |
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1.) Is the use of technology to change the genetic makeup of livings for human purposes 2.) Has raised many ethical questions 3.) Can make food taste better |
Biotechnology |
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Gene cloning would be used to ... |
Isolate and make copies of a normal gene |
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PCR involves which of the following? 1.) Denaturing, which results in two single strands of DNA 2.) Extension, which adds nucleotides to primers 3.) Annealing, which mixes the single stranded DNA with primers |
All of the above |
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Primers are used during the PCR process. These primers are ... |
Short segments of DNA that serve as a starting point for Taq polymerase |
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Which of the following is true concerning PCR? 1.) Denaturation occurs around 95°C 2.) Annealing occurs around 55°C 3.) Extension occurs around 72°C |
All of the above |
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The steps of gene cloning are, in order, ... |
Isolation, ligation, transformation, and selection |
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Includes a purple tomato that has been genetically modified to contain a cancer-fighting compound |
Transgenic crops |
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Recombinant DNA ... 1.) Results from the ligation of an isolated gene and plasmid DNA 2.) Is inserted into a living cell in the transformation process 3.) Is screened for in the selection process |
All of the above |
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Biotechnology can be used to ... 1.) Develop crops that are resistant to insects 2.) Create organisms that are useful to humans 3.) Free innocent people from jail |
All of the above |
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Ethical, legal, and social issues raised by biotechnology include ... |
The ownership and safety of genetically modified organisms and crops |
