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Study Guide for Heredity and Genetics
SC-07-3.4.1
Students will:
 describe the role of genes/chromosomes in the passing of information
from one generation to another (heredity);
 compare inherited and learned traits.
Every organism requires a set of instructions for specifying its traits. This
information is contained in genes located in the chromosomes of each cell
that can be illustrated through the use of models. Heredity is the passage
of these instructions from one generation to another and should be
distinguished from learned traits.
DOK 2
When you have master this unit you will be able to do the following:
 I can explain the function of genes and chromosomes in the transmission of
genetic information.
 I can use a Punnett square to interpret different traits.
 I can describe the difference between inherited and learned traits.
Study Guide:
Vocabulary Words : Genes , Chromosomes, Heredity, Inherited traits, Learned traits,
Homozygous, Heterozygous, Punnett Square, Phenotype, Genotype, Pedigree
Skills needed for the Assessment:
1) Creating a Punnett Square
2) Read a bar graph
3) Interpret a pedigree
Able to answer the following questions:
4) What is a sex-linked gene.
A disorder caused by a gene located on a sex chromosome, usually the X
chromosome.
Create a pedigree using a sex-linked disorder. (see example above)
5) Identify the complementary strand for DNA.
Identify the complimentary gene for each one listed below
AGCTA-T
G-C
C-G
T-A
6) How many Chromosomes do each Human Body Cell Have? 46
How many Chromosomes does a human offspring get from its mother? 23
What percentage of chromosomes does a human offspring get from its mother?
50%
How many Chromosomes does a human offspring get from its father? 23
What percentage of chromosomes does a human offspring get from its father?
50%
7) Explain Mendel’s pea plant experiment
http://www.ncbi.nlm.nih.gov/books/NBK22098/
http://www.mendel-museum.com/eng/1online/experiment.htm
http://www.indiana.edu/~p1013447/dictionary/mendel.htm
8) Explain and Create a Punnett Square showing incomplete Dominance.
Incomplete dominance is a form of intermediate inheritance in
which one allele for a specific trait is not completely dominant
over the other allele. This results in a third phenotype in which
the expressed physical trait is a combination of the dominant
and recessive phenotypes.