Complex inheritance patterns

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•
Biology
•
9th - 12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is incomplete dominance?
Back
A genetic situation in which one allele does not completely dominate another allele, resulting in a new phenotype that is a blend of the two traits.
2.
FLASHCARD QUESTION
Front
What is codominance?
Back
A form of inheritance where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that is neither dominant nor recessive.
3.
FLASHCARD QUESTION
Front
What are multiple alleles?
Back
A situation in which three or more alleles exist for a particular gene, leading to a variety of possible phenotypes.
4.
FLASHCARD QUESTION
Front
What is polygenic inheritance?
Back
A type of inheritance where multiple genes (often located on different chromosomes) influence a single trait, resulting in a continuous range of phenotypes.
5.
FLASHCARD QUESTION
Front
What is a sex-linked trait?
Back
A trait that is associated with a gene that is carried on one of the sex chromosomes (X or Y), often affecting males and females differently.
6.
FLASHCARD QUESTION
Front
What is the expected phenotype ratio when a pink flower (Rr) is crossed with a white flower (rr) in snapdragons?
Back
50% White: 50% Pink.
7.
FLASHCARD QUESTION
Front
What must an XX female have to express a recessive sex-linked trait?
Back
Two recessive alleles.
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