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33 Cards in this Set
- Front
- Back
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The difference in mode of inheritance between Huntington disease and cystic fibrosis is that |
Huntington disease does not skip generations but cystic fibrosis can. |
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Cystic fibrosis is autosomal recessive. This means that |
Both sexes can be affected and affected individuals and carriers pass the mutation |
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A very difficult aspect of Huntington disease is that |
A family may include individuals at different stages of the illness. |
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A very difficult aspect of Huntington disease is that a family may include individuals at different stages of the illness |
End |
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Gregor Mendel is known for |
Breeding plants to demonstrate the logic behind inherited trait transmission |
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Mendel followed the transmission of traits through several generations in |
Peas |
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Mendel called physical units responsible for the inheritance of traits “characters”. The basis of his first law is that characters |
Are carried on separate chromosomes |
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A person who had 2 identical alleles for a particular gene is for that gene. |
Homozygous |
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A Heterozygote has |
2 different alleles for a gene |
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Genotype refers to |
The combination of alleles for a particular gene. |
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Which of the following represents a mono hybrid cross |
Bb x Bb |
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An autosomal dominant trait |
Can affect either sex |
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A cross yields a genotypic ratio of 1:2:1 and a phenotypic ratio of 3:1 |
Monohybrid |
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Mendel’s laws derive from |
Meiosis |
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When Mendel crossed pure breeding peas having yellow seed color YY with pure breeding pease having green seed color (yy) all of the offspring had yellow are color. These results mean that yellow seed color is the |
Genotype |
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A punnet square displays |
The probabilities of how alleles combine in offspring |
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The inheritance of eye color indicates that |
Other characteristics such as the texture at the back of the eye can affect the phenotype |
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The wild type eye color for humans is |
Brown |
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Mode of inheritance reflects |
Whether the gene is on an autosomal or sex chromosome and whether the allele is recessive or dominant |
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Sickle cell disease is inherited as an autosomal recessive trait. The genotype of an individual with sickle cell disease is |
Homozygous recessive |
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The phenotypic ratio expected from a dihybrid cross involving complete dominance is |
9:3:3:1 |
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Which of the following genotypes is homozygous |
RRYY (homo=same) |
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In a human pedigree that traces the inheritance of sickle cell disease a half filled circle represents a |
Heterozygous female |
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In a human pedigree that traces the inheritance of albinism a filled square represents a |
Male with albinism |
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Family genome analysis compares the complete genome sequence of the members of a family |
True |
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Family genome analysis |
Compares complete genome sequences of members of a fam |
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The correct sequence for the steps of meiosis I is |
Prophase - Metaphase- Anaphase - Telophase |
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The correct sequence for the steps of meiosis I is |
Prophase - Metaphase- Anaphase - Telophase |
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Synapsis occurs during |
Prophase 1 |
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The # of possible chromosome combinations in a human gamete considering independent assortment but not crossing over is about |
8 million |
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The # of possible chromosome combinations in a human gamete considering independent assortment but not crossing over is about |
8 million |
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Spermatocytes and oocytes are |
Haploid |
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Crossing over occurs during |
Prophase 1 |
