Term
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Definition
| One of the first people to study heredity. He used pea plants to study. |
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Term
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Definition
| A factor that controls traits. |
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Term
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Definition
| The passing of traits from parents to offspring. |
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Term
| What is a genotype? Give an example. |
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Definition
| An allele combination that an individual has. Example: BB, Bb, bb. |
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Term
| What is a phenotype? Give an example. |
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Definition
| The trait that is visible. Example: Eye color, Height. |
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Term
| What does homozygous dominant mean? What would that look like as a genotype? |
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Definition
| Having two dominant alleles. It would look like this as a genotype: BB |
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Term
| What does heterozygous mean? What would that look like as a genotype? |
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Definition
| Having two different alleles. It would look like this as a genotype: Bb |
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Term
| What is co-dominance? Give an example. |
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Definition
Two alleles that are equally dominant and both traits show.
Example: Parrots that are pink and parrots that are orange, their offspring would be pink and orange. |
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Term
| What is incomplete dominance? Give an example. |
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Definition
Two alleles that are equally dominant and the traits mix.
Example: Red fish and yellow fish would have orange offspring. |
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Term
| What are sex-linked genes? |
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Definition
| Carry the genes that determine male and female traits. Genes carried on the sex-chromosome. |
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Term
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Definition
| A permanent change in the DNA sequence of a gene. |
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Term
| If there are golden geese (G) and silver geese (g), what are the genotypes and phenotypes of the offspring when the parents are Gg and Gg? |
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Definition
Genotypes: Phenotypes:
25% GG 75% Golden
25% Gg 25% Silver
50% gg |
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Term
| There are giraffes that display incomplete dominance for neck length. What are the possible genotypes and phenotypes of the offspring if one parent that has a long neck and the other has a short neck? |
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Definition
Genotypes: Phenotypes:
100% heterozygous 100% Medium neck |
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Term
| There are hamsters that display co-dominance for their fur color. If the mom is CbCb and the dad is CbCw, what are the possible genotypes and phenotypes of the offspring? (b stands for black fur and w stands for white fur) |
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Definition
Genotypes: Phenotypes:
50% CbCb 50% black
50% CwCb 50% black/white |
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Term
| What is a dominant allele? |
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Definition
| Always shows as the trait if the allele is represented by a capital letter. |
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Term
| What is a recessive allele? |
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Definition
| Only shows as the trait if the organism has two of these alleles. The trait will be masked if the organism has one dominant allele. It is represented be a lowercase letter. |
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Term
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Definition
| Carrying the allele but the trait doesn't show. |
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Term
| What is DNA made up of? Draw a picture of DNA and label it. |
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Definition
| Base Pairs: Adenine, Thymine, Guanine, Cytosine. AT GC CG TA (sugars, and phosphates) |
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