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Biology189 Ch11
Chromsomes and Human Genetics
| Question | Answer |
|---|---|
| What was Mendel unaware of? | Chromosomes |
| Theory that states that genes are on the chromosomes | Chromosome Theory of Inheritance |
| What pair up during Meiosis 1? | Homologous Chromosomes |
| What contain the same genes but may have different alleles? | Homologous Chromosomes |
| Each homologous chromosome is what kind of long chromosome? | DNA chromsome |
| A gene is a short region of what? | Chromosome |
| Eahc chromsome can have up to how many genes? | 1000 |
| Different alleles originally arose from what? | Mutation |
| What is the name for the specific spots where genes are? | Loci |
| Where are alleles on Homologous Chromsomes? | Matching on the same locus on each Chromosome |
| What are located close togther on a Chromsome on the same Chromsome and are also inherited togther? | Linked genes |
| Genes are traits that only get inherited if they already have another certain gene or trait | Linked genes |
| Who discover linked genes with fruit flies? | Thomas Hunt Morgan |
| Being heterozygous for two linked genes can give rise to how many different gamete genotypes? | four |
| When are gamete types not equal? | When genes are linked |
| With linked genes, gametes with the parental combiations of alleles are more or less common than those that have recombinate combinations? | more |
| What were the early studies of crossing over performed by which led to linkage maps? | Fruit Flies |
| Most human disorders are dominant or recessive? | Recessive |
| What will have one diseased allele but will not show the disorder? | Carrier |
| A carrier is always what? | Heterozygous |
| Achondroplasia is a form of what? | Dwarfism |
| What is the disease name for having additional digits like finger or toes? | Polydactylism |
| Is it possible to be a carrier for a dominant doisorder? | No because if you have one diseased allele you will always have the disorder |
| What are two kinds of lethal disorders? | Huntingtons disease and Alzheimers |
| What can you make to see the history of a trait in a family and to analyze human traits? | Pedigree |
| What determines the inheritance of certain traits? | Sex Chrmosomes |
| What are males? | Heterogametic |
| Is it the female or male's gametes that determine the gender of the offspring? | Males |
| Any genes located on the X chromosome | Sex-linked genes |
| Majority have nothing to do with gender | True |
| What percentage of sons from the mother will be affected? | 50 |
| Why do females rearly get these disease? | Becasue they would have to recieve two affected X chromsomes one from each parent |
| What are two genetic conditons resulting from sex linked genes? | Red-green color blindness and Hemophilia (blood clotting) |
| What are two main types of inherited chromosomal structure? | Changes in number and changes in structure |
| What are the four ways the structure can chnage in Inherited Chromosomal Abnormailities? | Deletion,Inversion, Translocation, and Duplication |
| What is Cri du Chat? | A chromosomal abnormalitly that is the removal of the top of chromosome 5 |
| What are the symptoms of Cri du Chat? | meowing sound of infants, slow growth, and sever mental reatardation and small head and low set ears. |
| What is Klinefelters syndrome? | XXy Males |
Created by:
paige883
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