12519927
Description
Flashcards by J yadonknow, updated more than 1 year ago
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Created by J yadonknow
about 6 years ago
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| Question | Answer |
| What organism did Gregor Mendel experiment on? | Pisum sativum |
| How do you ensure self-fertilisation doesn't occur? | Remove stamens with scissors Brush sperm-bearing pollen from one plant to egg-bearing carpel of another |
| What is required of the parents? | That they're true-breeding for the trait in question. |
| Draw a simple monohybrid cross for a single trait | P generation F1 generation F2 generation |
| What is a unit of inheritance | both parents contribute equally to offspring in sex repro organisms, giving one unit each. Each unit is a genetic LOCUS and broadly corresponds to a GENE |
| What do each gamete contain? | A copy of each gene |
| What is the name of the alternative forms of a gene? | Allele |
| What is the genotype? | The combination of alleles present |
| What is Mendel's 1st law? | The principle of Independent segregation (Draw a simple cross diagram of phenotypes) |
| Make a chi squared test for the observed/expected flowers | Observed = 705 purple = 224 white x^2=0.39075 |
| What is Mendel's 2nd law? | Independent assortment 2 traits dihybrid inheritance |
| How can the 9:3:3:1 ratio occur? | Only if the probability of inheriting a specific allele of one locus affects the probability of inheriting a specific allele of the other locus. |
| Name some chromo numbers boi | Human: 23 per gamete 23,000 genes in genome Peas: 7 p gamete Drosophila melanogaster 4 c.elegans 3 |
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