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18 Cards in this Set
- Front
- Back
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Non disjunction is related to a number of serious human disorders. How does non disjunction cause these disorder |
Alters the chromosome number |
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What occurs during the process of meiosis in humans that can lead to a child with the condition of Down Syndrome? |
Production of gametes with one duplicate chromosome. |
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Which of the following could only be a result of nondisjunction during meiosis of sperm formation and not egg formation? |
XYY |
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What part of the chromosome might be involved with processes such as aging and cancer? |
Telomere |
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What is the relationship between individual I-1 and individual III-2 in Figure 11-1? |
Grandmother - Grandson |
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A phenotype that results from a dominant allele must have at least ____________ dominant allele(s) present on the parent(s). |
One |
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According to Figure 11-4, what is the chance that individual A will be afflicted with Huntington's? |
50% |
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A man's grandfather on his father's side had Galactosemia. Assuming that his mother was not a carrier, what is the probability that this man is a carrier for the disorder? |
0.75 |
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What do Galactosemia and Tay-Sachs Disease have in common? |
Both are conditions caused by the lack of a gene that codes for particular enzymes. |
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What type of inheritance pattern does the trait represented by the shaded symbols in Figure 11-1 illustrate? |
Sex-Linked |
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For the trait being followed I'm the pedigree, individuals II-1 in Figure 11-1 can be classified as ______? |
Carriers |
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When roan cattle are mated, 25% of the offspring are red, 50% are roan, and 25% are white. Upon examination, it can be seen that the coat of a roan cow consists of both red and white hairs. This trait is one controlled by? |
Codominant Alleles |
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Examine the graph in Figure 11-3, what illustrates the frequency in types of skin pigmentation in humans. Another human trait that would show a similar inheritance pattern and frequency of distribution is ________? |
Height |
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Given that the dominance hierarchy of rabbit fur color alleles is C>C*ch>C*h, from grey to chinchilla to Himalayan, respectively, what would be the percentage of Himalayan colored rabbits from parents with C C*h and C*ch C*h? |
25% |
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If a female fruit fly heterozygous for red eyes (X*R X*r) crosses with a white-eyed male (X*t Y), what percent of their offspring would have white eyes? |
50% |
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What phenotype is depicted in Figure 11-5? |
B |
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A man heterozygous for blood type A marries a women heterozygous for blood type B. The chance that their first child will have type O blood is______? |
75% |
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A series of plants, produced through vegetative propagation, have been planted at different altitudes. The researcher observes that the higher the altitude, the shorter the plant will grow. Please make a hypothesis to explain the results. |
Higher altitudes decrease the expression of genes that promote height. |
