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57-73
| Question | Answer |
|---|---|
| 57. Key for ABO Blood Groups | A IAIA or IAi B IBIB or IBi AB IAIB O ii |
| 58. ABO codominance | Two dominant alleles can be present and both are represented, like in an IAIB (AB) blood type. |
| 59.ABO multiple alleles | instead of two alleles, one dominant and one recessive, with blood there are three possible alleles A, IB, or i. |
| 60. Which chromosome determines gender | the X/Y chromosome determines gener XX girl XY boy |
| 61. are the same genes on the X and Y chromosome, Which is bigger? | Some genes are present on the X chromosome and absent from the shorter Y chromosome |
| 62. What chromosome is responsible for Color Blindness? | X |
| 63.What chromosome is responsible for Hemophilia? | X |
| 64. Sex linked traits? | Exist only on the X or Y chromosome |
| 65.Key for Colorblindness? | XC XC (female, normal) XC Xc (female, normal) Xc Xc (female, colorblind) XC Y (male, normal) Xc Y (male, colorblind) |
| 66. Key for Hemophilia? | XH XH (female, normal) XH Xh (female, normal) Xh Xh (female, effected) XH Y (male, normal) Xh Y (male, effected) |
| 67. Why can females be homo or heterozygous for x linked traits, but males cant? | because males have a Y chromosome, so they can either have a dominant allele with their Y, or a recessive one, but they can't have a homozygous set with two X's or two Y's |
| 68.Why is a female carrier always heterozygous for an X linked trait? | Because if they are a carrier, that means they have the allele responsible, but it is recessive , and if a dominant alleles is present it wont be expressed, so to be a carrier you need one recessive and one dominant. |
| 69. Example of linked genes | fruit flies, short wings are linked with black skin, and long wings are linked with grey skin. |
| 70.How can you identify when offspring are recombinants in a dihybrid cross between linked genes? | ****ASK IN CLASS*** CONFUSED |
| 71.Polygenic inheritance | A non-Mendelian form of inheritance in which a particular trait is produced by the interaction of many genes (more than one gene) |
| 72. Continues variation | is controlled by alleles of a single gene or a small number of genes. EX. attached ear lobes, curled tongue. |
| 73. Discontinuos variation | In continuous variation there is a complete range of measurements from one extreme to the other EX. skin color, height |
Created by:
collindaily
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