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Genetics Study Stack
Test on 3/13/2015
| Question | Answer |
|---|---|
| ____ are more likely to get a sex-linked trait because they only have one ___ chromosome | Males/X |
| Mutations occur in _____ | DNA |
| Mutations can occur in ______ cells or ____ cells | Body/Sex |
| What type of mutations are passed to offsprings? | Sex Cell Mutations |
| What type of mutations are not passed to offsprings? | Body Cell Mutations |
| When a piece of a chromosome breaks off this is what? | Deletion |
| When a piece of a chromosome breaks off and reattaches in the opposite direction this is what? | Inversion |
| What is it called when a broken piece of a chromosome attaches to a nonhomologous chromosome. | Translocation |
| What is Nondisjunction? | Replicated chromosomes do not pull apart during cell division so one cell has an extra chromosome and one doesn't have enough |
| What are some examples? | Down Syndrome Klinefelter’s Turner’s Syndrome XXY |
| What do genetic counselors do? | Explain characteristics of traits, help parents determine probability of passing on traits, they use pedigrees and karyotypes as tools, and they study how traits are inherited through families. |
| Name the three characteristics of a Karyotype | Three characteristics of a karyotype is pictures of cells with chromosomes that have been removed and stained. Helpful in identifying nondisjunctions. They also can see missing or extra chromosomes. |
| What is Amniocentesis? | To remove amniotic fluid doctors insert a large needle into the uterus of a mother to see the skin cells. |
| What is fetoscopy? | Make an incision in the uterus and insert camera or surgical tools. |
| How do ultrasounds work? | Ultrasounds work by bouncing sound waves off of a fetus to get an image. |
| What is a pedigree? | A Pedigree is a record that traces how a trait is inherited and helps predict the future generations. |
| What is genetic engineering? | Biological and chemical engineering that changes arrangement of DNA |
| What does genetic engineering use? | Recombinant DNA (insulin) |
| What is a gene transfer? | To insert normal genetic material into a virus which it takes to the body cells and "attacks" them. This places the normal genes in place of abnormal ones. |
| What are genetic ethics | They are how much influence science should have on nature and should science interfere to cause changes? |
Created by:
16esmith
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