Download Variations of Inheritance Study Guide

Name: _____________________________________________ Date:_____________________ Hour: ___________
Variations of Inheritance Study Guide
Summarize intermediate inheritance in your own words in one
sentence.
Summarize multiple alleles in your own words in one sentence.
What are two other ways to say intermediate inheritance?
Examples of multiple allele traits: (some examples can work as
codominance also)
Examples of intermediate inheritance:
How can you tell that a situation involves multiple alleles and not
another type (intermediate inheritance, polygenic, etc)?
How can you tell that a situation involves intermediate inheritance and
not another type (codominance, polygenic, etc)?
Name: _____________________________________________ Date:_____________________ Hour: ___________
Summarize codominance in your own words in one sentence.
Summarize polygenic traits in your own words in one sentence.
Examples of codominance: (some examples can work for multiple
alleles also)
Examples of polygenic traits:
How can you tell that a situation involves codominance and not
another type (intermediate inheritance, polygenic, etc)?
How can you tell that a situation involves polygenics and not another
type (intermediate inheritance, codominance, etc)?
Name: _____________________________________________ Date:_____________________ Hour: ___________
Summarize environmental effects on inheritance in your own words in
one sentence.
Examples of environmentally influenced traits:
How can you tell that a situation involves environmentally influenced
traits and not another type (intermediate inheritance, codominance,
etc)?
Examples: Determine the type of inheritance based on the description.
1. The color of fruit for plant "X" is determined by two alleles.
When two plants with orange fruits are crossed the following
phenotypic ratios are present in the offspring: 25% red fruit,
50% orange fruit, 25% yellow fruit. What are the genotypes of
the parent orange-fruited plants?
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2. The human HLA system, which is responsible for identifying
and rejecting foreign tissue in our bodies, can have at least
30,000,000 different genotypes. It is the HLA system which
causes the rejection of organ transplants.
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3. A person’s weight depends not only on genetics, but also on
the type of food they eat and how much exercise they get.
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4. A cross between a black cat & a tan cat produces a tabby
pattern (black & tan fur together).
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5. When white chickens are crossed with black chickens, the
result is not a grey chicken, but a chicken with both black and
white feathers.
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6. The gene for curly hair seems to be dominant to the gene for
straight hair. Homozygous dominant individuals have curly
hair, and homozygous recessive individuals have straight hair.
However, heterozygous individuals have wavy hair; a
phenotype in between curly and straight hair.
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7. Human skin color is thought to be controlled by at least 12
genes, which is why skin color can vary so much.
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