What is Genetics? Web Activity
Directions: Go to t he website http://www.dnaftb.org/dnaftb/ .
Answer the following questions.
Under the Sections portion of the website, click on Classical Genetics. This is the
Children Resemble their Parents section.
1.
In 1865, an Australian monk named ______________________ found that individual traits are determined by genes, which are inherited from the
____________________.
2.
Click on Animation.
What did Gregor Mendel experiment with and what were the three reasons why?
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3.
Click on Audio/Video. a.
What is the definition of a gene?
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________________________________________________________ b.
What is the definition of inherited?
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4.
Click on Bio. a.
Gregor Mendel found that genes come in ___________ and are inherited as specific __________, _________ from each parent. b.
How did Mendel track the segregation of parental genes and their appearance in the offspring?
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_________________________________________________________ c.
Explain the Law of Segregation.
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What is Genetics? Web Activity
________________________________________________________ d.
Explain the Law of Independent Assortment.
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________________________________________________________ e. Explain the Law of Dominance.
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How long did it take Mendel to complete his genetic experiments?
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When did he publish his results?
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How many pea plants did he grow?
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When were the experimental results finally understood?
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5.
Click on Problem. Summarize the correct answer to all of the following questions.
1.
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2.
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Click on 2 on the right hand side. Genes come in pairs.
6.
Mendel chose several characteristics to observe in his pea plants. He found that each _______________ has _________ _____________________ forms. Each strain of this self-fertilizing plant contained only __________ form of the __________ that determined a _______________. Pure-bred plants with yellow seeds only produced _________________ with
_____________ seeds. Mendel concluded from his experiments that
________________ plants must have ________ copies of the same gene for each trait.
7.
Click on Animation. a. What is each visible trait called? __________________________________ b. What were the visible traits he looked at? __________________________
________________________________________________________________ c.
What are the two phenotypes for seed color? _______________________ d.
Traits are controlled by one __________. Each form is called an
____________. The pair of alleles is called the _____________________.
8.
Click on Audio Video.
Genetics and Probability 2 http://MathInScience.info

What is Genetics? Web Activity a.
What is the definition of an allele?
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________________________________________________________ b.
What is the definition of genotype?
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________________________________________________________ c.
What is the definition of phenotype?
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9.
Click on Bio. a.
The _________________ sent Gregor Mendel to school to continue his education. b.
What college did Mendel attend? ___________________________ c.
What subjects did he study? _______________________________ d.
What is Mendel now known as? ____________________________
10.
Click on Problem. Summarize the correct answer to all of the following questions.
1.
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2.
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3.
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Click on 3 on the right hand side. Genes don’t blend.
11.
Mendel found that when he crossed a pure-bred green-seeded pea plant with a pure-bred yellow-seeded pea plant the offspring ______________
(did, did not) have blended traits. He actually found that the offspring produced was only ________ color - __________. The _____________ colored seed seemed to disappear.
12.
Click on Animation. a.
Gregor Mendel found that none of the _______________________ traits he studied were _________________ in the offspring of a cross between two _________-bred parents. b.
In the _______________ offspring, only one of the two traits were seen. c.
Only one trait was seen in the ______________ offspring of the pure-bred crosses.
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What is Genetics? Web Activity
13.
Click on Problem. Summarize the correct answer to all of the following questions.
1.
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2.
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Click on 4 on the right hand side. Some genes are dominant.
14.
Mendel thought that genes acted like ______________________________.
When genes come together they manage to maintain their
_________________ ___________________. Although both gene alternates are present, there ________ (is or is no) blending of color because the gene alternate for yellow is _______________ over the gene alternate for green.
The ________________ trait is seen whenever a single copy of its gene is inherited. When Mendel crossed the hybrid offspring, _______________ seeds reappeared in the next generation. He reasoned that the
_____________________ green trait is shown _________ when a copy of the recessive gene form is inherited from __________ parent.
15.
Click on animation. a.
What two things did Mendel cross?
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____________________________________________________________ b.
What was the outcome of the offspring? ________________________ c.
Which phenotype disappeared? Why? ________________________
____________________________________________________________ d.
What did the second generation look like? _____________________ e.
After Mendel performed his experiments, he found that pea
____________ is controlled by one ___________. Each gene has
________ forms, a ______________ form and a _____________ form.
Each form is called an ______________. f.
How can you tell which allele represents a dominant trait?
____________________________________________________________ g.
Is the yellow seed or the green seed dominant? _________________ h.
When he crossed a pure-bred green plant with a pure-bred yellow plant, what is the outcome of the offspring? ____________________
___________________________________________________________ i.
When is the only time you will get a green pea plant?
___________________________________________________________ j.
When two hybrid plants are crossed, what is the outcome?
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16.
Click on gallery.
Explain the three pictures shown. ___________________________________
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What is Genetics? Web Activity
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17.
Click on Audio/Video. a.
What is the definition of dominant? ____________________________
____________________________________________________________ b.
What is the definition of recessive? ____________________________
____________________________________________________________ c.
What is the definition of heterozygous? ________________________
____________________________________________________________ d.
What is the definition of homozygous? _________________________
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18.
Click on Bio.
Why did Mendel’s results stay unnoticed for such a long period of time?
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19.
Click on Problem. Summarize the correct answer to all of the following questions.
1. _____________________________________________________________
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2. _____________________________________________________________
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3.
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4.
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5.
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Click on 5 on the right hand side, Genetic inheritance follows rules.
20.
Click on Problem. Try to complete the following problems. Read each
passage before the problem very carefully.
1.
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2.
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3.
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4.
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5.
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6.
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