Pedigree Charts

Flashcard
•
Biology
•
10th Grade
•
Hard
Wayground Content
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15 questions
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1.
FLASHCARD QUESTION
Front
What is a pedigree chart?
Back
A pedigree chart is a diagram that shows the occurrence and appearance of phenotypes of a particular gene or organism and its ancestors, used to analyze the inheritance of traits.
2.
FLASHCARD QUESTION
Front
How many alleles does each person carry for a trait?
Back
Each person carries 2 alleles for a trait, one inherited from each parent.
3.
FLASHCARD QUESTION
Front
What does it mean to be a carrier of a trait?
Back
A carrier is an individual who has one copy of a recessive allele that does not manifest in their phenotype but can be passed on to offspring.
4.
FLASHCARD QUESTION
Front
What is the difference between dominant and recessive alleles?
Back
Dominant alleles express their trait even if only one copy is present, while recessive alleles require two copies to express the trait.
5.
FLASHCARD QUESTION
Front
How can you determine if an individual is affected by a recessive disorder in a pedigree chart?
Back
An individual is affected by a recessive disorder if they exhibit the trait and have two recessive alleles (hh).
6.
FLASHCARD QUESTION
Front
What does the symbol 'hh' represent in genetics?
Back
The symbol 'hh' represents a homozygous recessive genotype, indicating that the individual has two recessive alleles for a trait.
7.
FLASHCARD QUESTION
Front
In a pedigree chart, what does a filled circle represent?
Back
A filled circle represents a female who expresses the trait being studied.
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