2. Mendel studied the inheritance of height in his pea plants. The F-2 generation consisted of...
2. Mendel studied the inheritance of height in his pea plants. The F-2 generation consisted of both dwarf plants (recessive trait) and tall plants (dominant trait). a) Using Punnett squares, show how he might be able to determine if a tall plant was heterozygous (Tt) or homozygous dominant (TT) by crossing each with a dwarf plant (tt). b) Explain the results in a sentence.
Homework Answers
Answer:
Test cross is used to identify the unknown genotype of an individual whether homozygous or heterozygous.
The unknown genotype is crossed with known recessive genotype, tt.
If testcross progeny produces all tall progeny, the unknow genotype is homozygous domiant, TT.
TT x tt ---Testcross
Tt (tall)---Progeny
If testcross progeny produces 50% tall & 50% dwarf, the unknow genotype is heterozygous, Tt.
|
t |
|
|
T |
Tt (tall)-50% |
|
t |
tt (dwarf)-50% |
Add Answer to:
2. Mendel studied the inheritance of height in his pea plants.
The F-2 generation consisted of...
, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding...
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Fill in the blanks 1. There is a gene for height in a species of pea...
Fill in the blanks
1.
There is a gene for height in a species of pea plant that we will
call "T gene". We would denote the dominant allele for this gene as
_____ and the recessive allele as _____. A homozygous dominant
individual's genotype would be _____, a homozygous recessive
individual's genotype would be _____, and a heterozygous
individual's genotype would be _____.
2. If this gene for height in pea plants shows complete
dominance (where the dominant allele...
1. In one experiment, Mendel crossed a pea plant that bred true for axial flowers with...
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, Pre-Lab Assignment P generation 1. Figure 9.8 illustrates one of Gregor Mendel's Dwarf breeding experiments with his pea plants. ai Genetic makeup: In this particular experiment with pea plant height, the P generation consisted of pure- breeding tall pea plants mated with pure- breeding dwarf pea plants. Gametes: 0 plants nated wito Fill in the blanks of the following paragraph ,geneation concerning this experiment. Gregor Mendel discovered several new ideas about inheritance when he performed breed- Genetic makeup: ing...
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Fill in the blanks
1.
There is a gene for height in a species of pea plant that we will
call "T gene". We would denote the dominant allele for this gene as
_____ and the recessive allele as _____. A homozygous dominant
individual's genotype would be _____, a homozygous recessive
individual's genotype would be _____, and a heterozygous
individual's genotype would be _____.
2. If this gene for height in pea plants shows complete
dominance (where the dominant allele...
Let's use this equation to solve the following problem: In pea plants, the allele for tall plants (T) is dominant to the allele for dwarf plants (1). If a population of 100 plants has 36 dwarf plants, what is the frequency of each allele? Here is a step-by-step guide: 1. Let p = frequency of the dominant allele (R), and q = frequency of the recessive allele (1). 2.92 = frequency of the homozygous recessive = 36%, or 0.36. Since...
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