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Genetics
Final
| Question | Answer |
|---|---|
| Mitochondrial DNA is responsible for this type of inheritance | maternal inheritance |
| Influence the mothers genotype has in the offspring during early development is referred to as | maternal effect inheritance |
| Siamese cats have dark ears nose and limbs compared to the rest of their body. In the winter they are darker than in the summer. The phenomenon is due to a _______ mutation | temperature sensitive mutation |
| Partental type chromosomes | are expressed in the two most numerous type offspring from a cross between a heterozygote and a recessive homozygote |
| whenever you cross two manx cats you will produce two tailless cats and one tailed cat. The tailless cats never breed true. The most probable explanation discussed in class is that the tailless mutation is a ___ lethal mutation | homozygous dominant |
| A mole homozygous dominant for yellow whiskers has | Two of the same alleles coding for whisker color |
| Genes come in different versions called | Alleles |
| Prokaryotic chromosomes do not have telomeres because | They are circular |
| In order to be functioanl a chromosome requires all of the following except | nucleomeres |
| The role of histone H1 in DNA packaging is to | Attach adjoining nucleosomes in the formation of the solenoid |
| They are formed from solenoids interacting with scaffolding proteins. | True |
| A 30nm fiber is also referred to as | solenoid |
| Interphase | Encompasses G1, S, and G2 phases of te cell cycle |
| Each sister chromatid of chromosome represents | One of the newly replicated double stranded DNA molecules |
| A skin cell in G1 has the same amount of DNA as | A 2 oocyte in prophase II |
| The brief period between meiotic divisions is called | Interkineses |
| Division of the cytoplasmic material is referred to as ___ and occures from prophase through telophase | Cytokinesis |
| In oogenesis there is ___ functional gametes from each primary gametocyte | 1 |
| What is the total number of telomeres in a rat cell in G2 | 168 |
| What is the total number of chromosomes present in the cell during metatphase 1 or meiosis (rat cell) | 75 |
| What is the total number of chromosomes in a polar body cell from a rat | 21 |
| Nuclear envelope is completely gone | (Stage) Meiosis I, Meiosis II, and Mitosis (Phase) Metaphase |
| Homologous chromosomes pair | (Stage) Meiosis I (Phase) Prophase |
| Crossover occures | (Stage) Meiosis (Phase) Prophase |
| Sister chromatids separate | (Stage) Mitosis and Meiosis II (Phase) Anaphase |
| Centroles divide and separate | (Stage) Meiosis I, Meiosis II, and Mitosis (Phase) Prophase |
| Synapsis occurs | (Stage) Meiosis I (Phase) Prophase |
| Mendels principle of ___ says that two allels for the same gene are inherited separately | Segregation |
| The formula used for calculating the number of potential gametes is ____ | 2^N |
Created by:
AshCha
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