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13 Cards in this Set
- Front
- Back
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Why did Mendel use pea plants in his experiments?
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because they showed only 2 clearly different forms of each trait
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Which of the following is found in Mendel's parent generation?
A) TT B) Tt C) heterozygote |
A) TT
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What would a tall heterozygote's genotype be in Mendel's pea plants?
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Tt
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What phenotype disappears in the F'1 generation?
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short
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Which of the following genotypes can occur in the F'2 generation?
A) TT B) Tt C) tt D) all of these |
D) all of these
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What should the ratio of tall to short plants be in the F'2 generation?
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3:1
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A heterozygous Tall plant is crossed with a short plant. What fraction of their offspring should show the Tall phenotype?
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1/2
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Two heterozygous pea plants are crossed, producing a total of 24 offspring . How many offspring should show the tall phenotype?
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18
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How many factors are contained for a body cell to each trait according to the principle unit of charecters?
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2 factors
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Due to segregation, a gamete from a homozygous dominant pea plant should have which of the following?
A) Tt B) tt C) T D) t |
c) T
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A test cross of a tall plant results in four offspring, all of which are Tall. Ehat was the genotype of the original palnt?
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Tt
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If two dihybrids are crossed, how many of their offspring should show the dominant form of the first trait and the reccessive form of the second trait?
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3/16
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If a dihybrid plant (tall w/yellow seeds) is crossed with a reccessive plnat (short w/green seeds), what fraction of their offspring should be short with yellow seeds?
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1/4
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