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13 Cards in this Set

  • Front
  • Back
Why did Mendel use pea plants in his experiments?
because they showed only 2 clearly different forms of each trait
Which of the following is found in Mendel's parent generation?

A) TT
B) Tt
C) heterozygote
A) TT
What would a tall heterozygote's genotype be in Mendel's pea plants?
Tt
What phenotype disappears in the F'1 generation?
short
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
What should the ratio of tall to short plants be in the F'2 generation?
3:1
A heterozygous Tall plant is crossed with a short plant. What fraction of their offspring should show the Tall phenotype?
1/2
Two heterozygous pea plants are crossed, producing a total of 24 offspring . How many offspring should show the tall phenotype?
18
How many factors are contained for a body cell to each trait according to the principle unit of charecters?
2 factors
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
A test cross of a tall plant results in four offspring, all of which are Tall. Ehat was the genotype of the original palnt?
Tt
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?
3/16
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?
1/4