Term
| where does multiple allelism work? |
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Definition
| height, i.q. eye color,.skin color |
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Term
| What is multiple allelism? |
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Definition
there are more than two allele options for the gene. |
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Term
| What does mulitiple allelism also effect? |
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Definition
| ABO blood types of humans |
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Term
| what do you call it when a flower is pink? |
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Definition
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Term
| what is incomplete dominance. |
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Definition
| when both parents genes are mixed to make an intermediate color. (ex. pink) |
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Term
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Definition
| That means more than one gene determines the phenotype. |
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Term
| describe polygenic inheritance? |
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Definition
| more than one gene determines the phenotye. |
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Term
| What is it called when more than one phenotype characteristic is controlled by loss of a single gene? |
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Definition
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Term
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Definition
alleles at a single locus may have effects on two or more traits. |
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Term
| how many autosomes and sex chromsomes do humans possess? |
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Definition
| 22 autosomes and 1 pair of sex chromosomes. |
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Term
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Definition
| during meiosis this is occurs either in anaphase I or II, where the homologous pairs do not seperate equally, or the chromatids do not seperate equally. Therefore there may be three on one side of the (n +1) cell while on the other side there is only one(n -1) or visversa. This happens in the gametes or the sex chromosomes. This can result in a variety of problems. |
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Term
During meiosis my sister got an extra chromosome what would I call that? |
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Definition
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Term
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Definition
when you have one extra or one less chromosome. 2n +1 or 2n-1 |
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Term
| My brother is missing a chromosome what is that called? |
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Definition
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Term
| what are most aneuplodies? |
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Definition
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Term
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Definition
It's where the individual inherits 1 copy from mom and 2 copies from dad resulting in 3n.( or visversa.) or when an individual inherits 2 copies from mom(instead of one) and 2 copies from dad(instead of one). 4n |
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Term
| How do you get down-syndrome? |
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Definition
| through a trisome in the 21st chromosome. |
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Term
sex chromosomes are what? |
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Definition
| these are either the y linked genes(sex genes) they contain less than 24 genes. Only one gene effects them becoming males. Therefore males and females are 99% alike with only the male gene being different. There is also the x linked genes(sex genes), they hold more than 2,062 genes that are primarily non sexual. |
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Term
| why do problems generally occur in males? |
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Definition
| Because the y gene only gives less than 24 genes while the female gives over 2,062. So if a female has problems in her sex gene than the male has no other gene to compare it to(because the x doesn't have very many) and therefore it is left with the bad gene. Examples include hemophilia. |
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Term
| how come girls don't get it? |
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Definition
| Girls generally do not get hemophilia and the like because they are given two x genes and if the mothers is messed up and the fathers is not than they can use the fathers to take care of themselves. They also are a carrier though potentially. |
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Term
| What are other diseases for men? |
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Definition
| muscular distrophy and color blindness. |
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