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15 Cards in this Set
- Front
- Back
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What are the three types of Phenotypes? |
Homozygous Recessive, Homozygous Dominant, and Hetrozygous |
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X and Y Chromosomes are Hetreomorphic. What does that mean? |
They don't contain the same linear sequence of genes. |
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Y chromosome is gene for TDF. What is TDF |
Testis Determining Factor. If you have Y then you will be a male. |
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Most sex linked traits are what? |
X-linked. |
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Males only have one x-linked copy. Males are much more likely to express what? |
x-linked recessive traits. |
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Females only express recessive traits when what? |
Phenotype is homozygous recessive. Otherwise Dominate gene is ALWAYS dominate. |
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What is incomplete Dominance? |
Both alleles are partially expressed in the hetrozygote. Ff means a little of both in this case. |
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CoDominance means what? |
In natural populations most genes have 3 variants. 3 different outcomes instead of 2. |
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Complex Patterns of Inheritance are what? |
Patterns that do not follow the laws of Mendelian Inheritance/Genetics. |
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Complex Patterns of Inheritance. What is Epistasis? |
A type of gene interaction in which the alleles of one gene mask the effect of another. example: if you have brown hair then you will NEVER have purple eyes. |
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Complex Patterns of Inheritance. What is Continuous Variation? |
Inheritance pattern in which offspring display a continuous range of phenotype. Spectrum of eye colors instead of green or red. |
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Complex Patterns of Inheritance. What is Autosomal Linkage? |
If two genes are located close on the chromosome the probability they get inherited together is more likely. When further apart, less likely. |
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Complex Patterns of Inheritance. What is X-Chromosome Inactivation? |
in FEMALES one x-chromosome is inactive in each somatic cell. This produces a mosaic phenotype.. Calico Cat. |
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Mendel's laws do not adequately explain all the patterns of inheritance? (true/false) |
True. There are complex patterns that do not follow his rules. |
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The inheriteance pattern where two or more genes do not assort independently bcthey are close together on the same chromosome is called |
Linkage |
