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11.1 The Work of Gregor Mendel
Book Reference: Honors page 308-312, Foundation Edition pages 262-265
Vocabulary: write the definition of the word/term and provide a picture (or some other memory device) that helps you remember what the word/term means.
Principle of Dominance-
Who was Gregor Mendel and what did he study?
About Mendel’s experiment
When Mendel crossed purebred green pea plants with purebred yellow, what was the result?
When he crossed the results from the first breeding, what was the result?
Why did the green trait “disappear” after the first cross and then “reappear” after the second?
What’s the difference between genotype and phenotype? Give an example of each
For each example below, indicate if it is a genotype (G) or a phenotype (P)
___ Purple flower
___ Curly Hair
For each genotype given below, indicate if it is homozygous (Ho) or heterozygous (He).
For each genotype given below, indicate which phenotype(s) would appear. Background information about genotypes and phenotypes is given.
Round (R) or Wrinkled (r)
Yellow (Y) or green (y)
Axial (A) or terminal (a) Flower position
Tall (T) or short (t) plant height
For each phenotype given, provide a genotype. You may use any letters that you wish.
____ Homozygous Tall
____ Heterozygous Seed color
____Purebred brown fur (recessive)
____ Purebred white fur (dominant)
____Hybrid for fur color
____ Homozygous for Dimples (dominant)
____ Heterozygous for cleft chin
____ Hybrid Tall plants (tall is dominant)
In the circles to the right, show the alleles in the gametes of the parent generation. Show how the alleles recombine in the F1 plants. (remember: gametes will have just one letter, offspring cells will have 2 letters)
Name________________________________________________ Block__________ Date_____________