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Stretch of DNA that encodes a protein trait. Segment of a Chromosome |
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Definition
| Different versions of the same gene |
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Definition
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| Traits passed from parents to children |
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| Who is Mendel and what did he do? |
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Definition
Mendel was a monk circa 1800's
He figured out mathmatical heredity by working with garden peas. |
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Term
| What is Mendel's Law of Segregation |
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Definition
| Stating that during the production of gametes the two copies of each hereditary factor segregates so that the offspring acquire one factore from each parent. |
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| What is Mendel's Law of Independent Assortment |
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Definition
| Each pair of alleles assorts independently of the other pairs of alleles during gamete formation |
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Definition
| The genetic makeup of an organism. |
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Definition
| The expressed traits of an organism. |
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If a pea flowers white, what is its genotype?
What is its phenotype? |
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Definition
Genotype: pp
Phenotype: White |
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Definition
| Crosses homozygous recessive with an individual with an unknown genotype. |
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| What is continuous variation |
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Definition
| Variation within a population (eg height in human beings). |
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| What is pleiotropic effect? |
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Definition
| Production of many effects from a signle gene |
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Term
| What is incomplete dominance? |
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Definition
| is a form of intermediate inheritance in which one allele for a specific trait is not completely dominant over the other allele |
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| What are Environmental Effects? |
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Definition
Some alleles are affected by the environment.
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| What are the codominant blood type alleles? |
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Definition
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| What is a recessive blood type allele? |
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Definition
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| Why can't a person with blood type A donate to a person with blood type O? |
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Definition
| The immune system of the person with the O type blood will begin to attack the A type blood once its been injected. |
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| Where are the genes for sex-linked found? |
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Definition
| Most sex-linked genes are found in the X chomosome. |
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| What is an example of a sex-linked trait? |
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Definition
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Term
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Definition
| Autosomes are another name for chromosomes number 1-22. They exclude the X & Y sex chromosomes. |
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| How many Autosomes are there? |
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Definition
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| What are the sex chromosomes? |
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Definition
| they are the X and Y chromosomes inherited from the egg and sperm. |
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Definition
| Shows the history of a trait within a family. |
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Term
| What is Huntington's disease and how is it inherited? |
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Definition
Mental deterioration and uncontrollable movement.
A person inherits it from one of their parents. |
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Term
| What is sickle cell anemia and how is it inherited? |
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Definition
Sickle cell anemia - red blood cell form abnormal crescent shaps
A person inherites two copies of the sickle cell gene one from each parent. |
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