Incomplete Dominance and Codominance
Flashcard
•
Science
•
6th - 8th Grade
•
Practice Problem
•
Hard
Standards-aligned
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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 parental traits.
2.
FLASHCARD QUESTION
Front
What is codominance?
Back
A genetic scenario where both alleles in a heterozygote are fully expressed, resulting in offspring with a phenotype that shows both traits simultaneously.
3.
FLASHCARD QUESTION
Front
In a Punnett square, what does a 50% chance of gray offspring indicate in incomplete dominance?
Back
It indicates that half of the offspring will exhibit the intermediate phenotype, which in this case is gray.
4.
FLASHCARD QUESTION
Front
What phenotype does a cow with brown and white spots represent?
Back
It represents codominance, where both colors are expressed equally.
5.
FLASHCARD QUESTION
Front
If a red flowered plant (RR) is crossed with a white flowered plant (WW) and shows incomplete dominance, what will the offspring look like?
Back
All offspring will have pink flowers (RW), which is the intermediate phenotype.
Tags
NGSS.HS-LS3-1
6.
FLASHCARD QUESTION
Front
What is the expected phenotype ratio in a cross showing incomplete dominance?
Back
The expected phenotype ratio is typically 1:2:1, representing the three possible phenotypes.
7.
FLASHCARD QUESTION
Front
How can you identify codominance in a genetic cross?
Back
By observing that both parental traits appear in the offspring without blending, such as in the case of AB blood type.
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