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Name___________________________
Genetics Webquest #1
Follow the directions given throughout this worksheet to guide you through the site and help
direct you to the answers.
Under sections, click on Classical Genetics.
Concept 1, Children Resemble Their Parents
1. What did Mendel call “genes”?
2. Briefly, what was Mendel’s contribution to the field of genetics?
Click on animation for the introduction to Mendel.
3. Why did Mendel choose pea plants for his work?
Click on the arrow (next) in the bottom right hand corner to continue through the
animation.
4. How did Mendel “cross fertilize” his plants?
Click on Bio and learn more about Mendel.
Johan Gregor Mendel is often called the _____________ of _____________. He lived
from __________ to __________. Through his work with pea plants, Mendel discovered
the basic laws of _______________ and was able to recognize the mathematical
___________________ ____ ___________________ from one generation to the next.
5. Mendel’s Laws of Heredity are known as:
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In the top right hand corner, click on concept 2, Genes Come in Pairs. Click on
animation.
1. What is a phenotype?
There are _________ and _________ traits (such as flower position and ____________
________________),__________ traits (like _____________ & ____________), and
_____________ traits, such as_______________,_______________, and seed coat
color. There are a total of ________ traits and each has _______ phenotypes.
2. What are the phenotypes of pod color?
What are the phenotypes of seed shape?
3. In the experiment Mendel explains to you, he tests seed ___________________.
Green seeds and yellow seeds are called ______________________.
4. Each form of a gene is called an _____________ and the pair of alleles written
together is called a _____________________________.
5. What is the genotype of a purebred green seed?
Click on concept 3, Genes Don’t Blend.
1. How are genes unlike paint?
Click on animation.
2. Mendel was surprised because none of the individual __________________ he studied
were blended.
Give two examples.
3. In the hybrid offspring, only _____________ of the two traits showed up.
Give two examples.
Click on concept 4, Some Genes Are Dominant.
1. What did Mendel propose for the reason that only one trait showed up in his hybrid
plants?
Click on Animation.
2. When Mendel crossed purebred yellow peas with purebred green peas, what
happened?
3. What is the genotype of the offspring that resulted from that cross between a
purebred green plant and a purebred yellow plant?
3. These plants are _____________________________ because they have one yellow
allele and one green allele.
4. When Mendel crossed the F1 hybrid peas, what were his results? Draw the diagram of
the F1 cross.
5. Peas can be yellow if they have two ____________ alleles or one ______________
and one ___________ allele. Green peas must ____ copies of the green __________.
6. What are the possible genotypes of offspring when you cross 2 heterozygous plants?
7. Most of the offspring will be __________ in color but the green ___________
reappears in this generation. In this case, the yellow phenotype is ____________
and the green phenotype is ____________.