Heredity Study Guide
8th Heredity/Genetics Study Guide Name_____________________
Period_____
1. Who is the Father of Genetics? ___________________________
2. What organism did he study, and what did he do to observe and discover information about traits and heredity?
3. What three things did Gregor Mendel discover because of his experiments?
4. List the traits he observed in plants?
5. List and define the 3 ways that genetic variation occurs.
Use the following letters to answer question 1-5. (B & b)
1. pure dominant genotype ___________
1. Pure recessive genotype ____________
1. hybrid genotype __________
1. heterozygous gene pair _____________
1. homozygous gene pair ______________
1. Dominant allele __________________
1. recessive allele ____________________
1. Use a punnett square to cross these one heterozygous parent with one homozygous recessive parent parents: (use the letter E)
When a pure dominant trait is crossed with a pure recessive trait, which trait will express itself in all of the offspring? Dominant or recessive? Give an example
9. What type of genotype is necessary for a recessive trait to appear?
9. What is a gene? ____________________________________________________
9. Complete the missing information. Parent 1- ___________, Parent 2 - __________
b
| |Bb |
|bb | |
Complete the punnett square, tell the genotype and phenotype for the offspring in percentages and
give the ratio for each
R = round & r = wrinkled Geno: _______________
Pheno: _________________
R r
| | |
| | |
| | |
Different forms of a gene are called ________________________.
*Please remember to study all old notes, study guides, and handouts from previous units!
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R
r
................
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