Unit 5 - Heredity

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44 Terms

1
Phenylketonuria
________ (PKU)- autosomal recessive disease caused by a single gene defect.
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2
Karyotype
________: a chart that organizes chromosomes in relation to number, size, and type.
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3
Hemophilia
________ caused by the absence of a protein vital to the clotting process.
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4
Thomas Morgan
________ made key discoveries regarding sex linkage and linked genes.
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5
Crossover
________- a form of genetic recombination that occurs during prophase I of meiosis, led to their production.
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6
Tay Sachs
________ disease- fatal genetic disorder that renders the body unable to break down a particular type of lipid that accumulates in the brain and eventually causes blindness and brain damage.
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7
Edwards
________ syndrome- can affect all organs; trisomy 18.
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8
Anaphase I
________- Separated homologous pairs move to opposite poles of the cell.
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9
Geneticists
________ breed the organism whose genotype is unknown with an organism that is homozygous recessive for the trait.
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10
Intermediate inheritance
________- an individual heterozygous for a trait (Yy) shows characteristics not exactly like either parent.
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11
Cytokinesis
________- After the daughter cells split, the two newly formed cells are haploid (n)
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12
Huntington
________ disease- A fatal disease that causes the breakdown of the nervous system.
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13
human life
The cells produced during meiosis in the ________ cycle- gametes.
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14
mates
A horizontal line from male to female represents ________ that have produced offspring.
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15
Cystic fibrosis
________ (CF)- recessive disorder, the most common fatal genetic disease in the US.
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16
Haploid
________ (n) organism- Has only one copy of each type of chromosome.
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17
Genotype
________: an organisms genetic makeup for a given trait.
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18
Diploid
________ (2n) organism- Has two copies of each type of chromosome.
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19
Chromosome duplication
________- results in the repetition of a genetic segment.
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20
genetic information
After meiosis I in females, one cell receives half the ________ and the majority of the cytoplasm of the parent cell.
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21
genetic input
The phenotype is a "mixture "of both of the parents ________.
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22
Mendel
________ used plant experiments to test this hypothesis and developed his two fundamental theories: the law of segregation and the law of independent assortment.
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23
F2
________: the second generation of offspring, or the second "filial "generation in a genetic cross.
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24
Deletion
________- occurs when a piece of the chromosome is lost in the developmental process.
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25
F1
________: the first generation of offspring, or the first "filial "generation in a genetic cross.
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26
Chronic myelogenous leukemia a cancer
________ affecting white blood cell precursor cells.
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27
DNA
Non- nuclear inheritance, in which offspring get ________ only from the male or female parent, does not follow the Mendelian pattern of inheritance.
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28
Eg
________: Mendels peas- round or wrinkled, green or yellow, purple flower or white flower.
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29
Meiosis
________ consists of a single synthesis period during which the DNA is replicated, followed by two acts of cell division.
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30
Turner syndrome
________ (XO)- sterile females who possess sex organs that fail to mature at puberty.
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31
Gregor Mendel
________- spent many years working with peas.
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32
P1
________: the parent generation in a genetic cross.
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33
Nondisjunction
________: the improper separation of chromosomes during meiosis, which leads to an abnormal number of chromosomes in offspring.
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34
Patau syndrome
________- causes serious brain and circulatory defects; trisomy 13.
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35
Dihybrid
________ cross- the crossing of two different hybrid characters (BbRr Ă— BbRr)
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36
Telophase II
________- The nuclei and the nucleoli for the newly split cells return.
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37
excess cytoplasm
The ________ is required for proper growth of the embryo after fertilization.
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38
Gregor Mendels work
________- not able to account for many patterns of inheritance that occur in life (sex- linked traits, incomplete dominance, and codominance)
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39
Usage of pedigrees
________: determine the risk of parents passing certain conditions to their offspring.
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40
Allele
________: a variant of a gene for a particular character.
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41
Phenotype
________: the physical expression of the trait associated with a particular genotype.
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42
Phenotype of an organism
________- can be determined from simple observation.
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43
fruit flies
The ________ had four pairs of chromosomes: three autosomal pairs and one sex chromosome pair.
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44
monohybrid cross
A(n) ________ between heterozygous gametes gives a 3: 1 phenotype ratio in the offspring.
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