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Punnett Square Bio
| Question | Answer |
|---|---|
| Whi waas the man that discovered genetics and how it worked ? | Gergor Mendel |
| How did he expirment genetics ? | with a pea expirment |
| What where the P plants in his expirment ? | The purebreed the ones who have been through self polination |
| What where the F1 plants ? | The first result of cross breeding the purebreed |
| What were the F2 plants ? | the result of the crossbredding of the F1 plants |
| What where the seven traits mendel used for the peas / | Pea color, pea shape, pod shape, pod color, plant height ,flower coloe,and flower position |
| What are Mendels first law or the laws of segregation ? | 1. Organisms in heriit two copies of each gene one from each parent 2.Organisms only donate one gene in their gametes thus two copies of genes seprate |
| How do you find the genotype ? | Its how many dominant crosses occurs like if the square reads AA Aa Aa aa its 1:2:1 |
| How do you find the pheno type? | Its how many dominat to recessive so if its AA Aa Aa aa the ratio is 3:1 |
| What is the law of independent assorment ? | That allel pairs seprate independtly during gamet formation aka meiosis |
| How can a disorder be caused by a recesive alle? | When thw two copies of the recessive chromosome are present. |
| what is carrier ? | When the person has it in the recesive allel not in the dominant |
| what are sex-linked genes ? | genes found on the sex chromosome |
| in sex linked genes a female can pass what chromosome ? | Only an x |
| In sex-linked genes a male can pass on what chromosome ? | X and Y |
| which sex chromosome has a more affect on the offspring ? | X y assumes the development of the male |
| Males only have one copy of each allel which means what ? | Even if the disorder was recessive it would have no allel to cover it making which ever disorder to show |
| What is X chromosome inactivation ? | when one of the two x chromosome in a femal is turned off making the female show the female gene or male |
| What is incomplete dominace ? | A heterozygous phenotype is somewhere between the two homozygous phenotype meaning the allel isnt dominant or recessive |
| What is an example of incomplete dominace ? | When a homozygous red flower is bred with a white homozygous flower making a pink one |
| What is codominance ? | When both allels are expressed niether are dominant or recessive |
| Whzt is an example of codaminace ? | When breeding a homozygous red flower with a white homozygous flower making a flower with some red and white areas |
| What ar polygenic traits ? | traits produced by two or more genes |
| What are example of polygenic traits ? | skin color, eye color |
| Who always carry the disorder for sex linked genes ? | The female on one of the x chromosome |
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BB2424
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