practice test
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Which person: mom or dad determines the sex of a baby? | dad
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| What is a Karyotype? | a set of photographs of chromosomes grouped in ordered pairs
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| How many chromosomes do human gametes have? | 23
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| What are 2 ways chromosomes get arranged for a karyotype? | homologous pairs, autosomal vs. sex chromosomes
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| What chromosome are disorders mostly found on? Why? | X chromosome; because it's larger and it carries more genes
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| COdominance represents: | spots
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| INCOMPLETE dominance represents: | blend
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| A transgenic organsim is one that- | contains DNA from another organism
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| Define Gene Therapy | Process of changing the gene that causes a disorder in order to eliminate the cause of the disorder
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| What is the gene called that normally prevents tumor growth in you body? | p53
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| First authorized attempt to cure a human genetic disorder by gene therapy occurred in | 1990
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| First successful attempt to cure a genetic disorder by gene therapy occurred in | 1999
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| DNA Fingerprinting is used to determine- | paternity
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| Define Hybridization | breeding technique that involves crossing dissimilar individuals to bring together the best traits of both organisms
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| Define Inbreeding | continued breeding of individuals with similar characteristics
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| What is the risk of inbreeding? | there's a chance for a genetic defect
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| How do breeders increase genetic variation? | they induce mutations, the ultimate source of variability
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| How do breeders increase mutation rate? | they use radiation and chemicals
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| What are polyploid plants? | plants containing many sets of chromosomes
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| Why are plasmids used for DNA transfer? | it ensures the transformed bacteria will be replicated and plasmids contain a gene that makes it possible to distinguish bacteria that carry the plasmid and the foreign DNA from those that don't
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| In 1986, who transferred luciferase into tobacco plant cells? | Steven Howell
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| What is a similarity between transgenic plants vs transgenic animals? | they both improve food supply
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| transgenic also means: | genetically modified
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| In 1997, who cloned a sheep who he named Dolly? | Ian Wilmut
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| What is the first step to cloning animals? | the nucleus of an egg cell is removed
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| What is the second step to cloning animals? | the cell is fused with a cell taken from another adult
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| What is the third step to cloning animals? | the cell is tricked into thinking it's fertilized and begins to divide
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| What is the last step to cloning animals? | the embryo is then placed in the reproductive system of a foster surrogate mother, where it develops normally
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Created by:
laurenperdue
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