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12 Cards in this Set
- Front
- Back
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Why are pea plants good for genetic studies? |
- Easy to grow. - Traits easily observed. - Plants breed true. - Self fertilize. - Cross fertilize. |
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What is meant by locus (loci) on a chromosome? |
A locus is a specific location on a chromosome. |
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What is meant by true breeding plants? |
Successive generations produce the same trait when self-pollinated. |
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What were the results of the F1 generation when the pea plants were crossed? |
100% of the flowers were purple. |
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What were the results of the F2 Generation when the pea plants were crossed? |
75% were purple, 25% were white. |
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What is homozygous dominant? What about homozygous recessive? |
DD - homozygous dominant dd - homozygous recessive |
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What is heterozygous? |
Dd |
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What is domant and recessive? |
One is dominant. One is recessive. |
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What is the Law of Segregation? |
Members of each pair of genes (alleles) separate and end up in different gametes. |
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What is the Law of Independent Assortment? |
Each pair of alleles segregates independently of each other pair of alleles during gamete formation IF the pairs of alleles are on different chromosomes. |
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What is genotype? What is phenotype? |
The gene (such as DD, dd, Dd) is genotype. What actually shows is phenotype (purple, white, purple). |
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What does the Law of Segregation and the Law of Independent Assortment contribute to? |
Variation. |
