Trivia Quiz On Codominance And Incomplete Dominance!

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| By Kyle Pearson

Kyle Pearson

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Quizzes Created: 34 | Total Attempts: 95,758

Questions: 8 | Attempts: 2,568 | Updated: Mar 21, 2023

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Trivia Quiz On Codominance And Incomplete Dominance! - Quiz

An allele is one of the possible forms of a gene, and they can either completely blend with each other completely and form new phenotype or not blend together completely. This trivia quiz is on codominance and incomplete dominance and is designed to walk you through the two processes and how they occur in the human body.

Questions and Answers

1.

Click all of the examples that show INCOMPLETE DOMINANCE.
- A.
  
  A blue flower and green flower cross and make a turquoise colored flower
- B.
  
  A female dog with a short tail and a male dog with a long tail have puppies with a medium length tails
- C.
  
  One parent with straight hair and the other parent with curly hair have kids with wavy hair.
- D.
  
  A brown cow and a black blue bull have a calf that is brown and black.
Correct Answer(s)
A. A blue flower and green flower cross and make a turquoise colored flower
B. A female dog with a short tail and a male dog with a long tail have puppies with a medium length tails
C. One parent with straight hair and the other parent with curly hair have kids with wavy hair.

Explanation
The examples that show incomplete dominance are: A blue flower and green flower cross and make a turquoise colored flower, A female dog with a short tail and a male dog with a long tail have puppies with a medium length tails, and One parent with straight hair and the other parent with curly hair have kids with wavy hair. In incomplete dominance, neither allele is completely dominant over the other, resulting in a blending or combination of traits in the offspring.

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2
1
2.

Click all the ones that show Codomanince.
- A.
  
  A chicken with white feathers and a roster with black feathers makes a chicken with white and black feathers.
- B.
  
  Parents with blood types of A and B, have a child with AB blood
- C.
  
  A child with brown eyes has parents with brown and green eyes.
- D.
  
  A flower with red petals and a flower with white petals cross to make a flower with red and white petals.
Correct Answer(s)
A. A chicken with white feathers and a roster with black feathers makes a chicken with white and black feathers.
B. Parents with blood types of A and B, have a child with AB blood
D. A flower with red petals and a flower with white petals cross to make a flower with red and white petals.

Explanation
The given answer is correct because it includes all the examples that demonstrate codominance. In codominance, both alleles in a gene pair are expressed equally and simultaneously, resulting in a phenotype that shows a combination of both traits. In the examples provided, the chicken with white and black feathers, the parents with blood types A and B having a child with AB blood, and the flowers with red and white petals are all instances of codominance, where the traits from both parents are expressed in the offspring.

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1
0
3.

Blood is determined by individual combinations of the following gene varieties.I^A,I^B,and i . When I^AandI^B exist together, they make blood type AB (which has 2 dominant genes). This shows us that blood type is an example.
- A.
  
  Polygenic Traits
- B.
  
  Genotype
- C.
  
  Incomplete Dominance
- D.
  
  Co-Dominance
Correct Answer
D. Co-Dominance

Explanation
The correct answer is Co-Dominance. Co-dominance occurs when both alleles in a gene pair are fully expressed in the phenotype. In the case of blood types, the IA and IB alleles are co-dominant, meaning that if both alleles are present, they will both be expressed, resulting in blood type AB. This is different from incomplete dominance, where the phenotype is a blend of the two alleles, and from polygenic traits, which are controlled by multiple genes.

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0
1
4.

A cross of a white chick (WW) with a black chick (BB) produces all speckled offspring (WB) This type of inheritance is known as:

Correct Answer
codominance

Explanation
Codominance is the type of inheritance where both alleles for a trait are expressed equally in the offspring. In this case, the white allele (W) and black allele (B) are both expressed in the speckled offspring (WB), showing codominance.

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4 3
5.

If you cross a red plant with a white plant and the offspring is pink, what is that called?

Correct Answer
incomplete dominance

Explanation
When a red plant is crossed with a white plant and the resulting offspring is pink, it indicates incomplete dominance. Incomplete dominance occurs when neither of the parental traits is completely dominant over the other, resulting in a blending or intermediate phenotype. In this case, the pink color is a combination of the red and white traits, rather than one trait being dominant over the other.

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4
6.

Incomplete Dominance
- A.
  
  Both alleles are expressed and the phenotype is a blend
- B.
  
  Both alleles are expressed and the genotype is dominant
- C.
  
  Neither allele is expressed
- D.
  
  Alleles are dominant or recessive
Correct Answer
A. Both alleles are expressed and the phenotype is a blend

Explanation
This answer suggests that in incomplete dominance, both alleles are expressed and the phenotype is a blend. This means that neither allele is completely dominant over the other, resulting in a phenotype that is a combination or mixture of the traits associated with each allele.

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3
0
7.

Define codominance

Correct Answer
both alleles are expressed and the phenotype shows both traits

Explanation
Codominance is a genetic phenomenon where both alleles of a gene are expressed in the phenotype, resulting in the manifestation of both traits. Unlike incomplete dominance, where the traits blend together, in codominance, the traits are expressed independently and simultaneously. This means that neither allele is dominant or recessive over the other, and both traits are fully visible in the organism's phenotype. For example, in a codominant genotype of a flower with red and white alleles, the phenotype would show patches of both red and white coloration.

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Current Version
Mar 21, 2023

Quiz Edited by
ProProfs Editorial Team
Jan 06, 2020

Quiz Created by
Kyle Pearson

Trivia Quiz On Codominance And Incomplete Dominance!

Click all of the examples that show INCOMPLETE DOMINANCE.

Click all the ones that show Codomanince.

Blood is determined by individual combinations of the following gene varieties.IA,IB,and i . When IA and IB exist together, they make blood type AB (which has 2 dominant genes). This shows us that blood type is an example.

A cross of a white chick (WW) with a black chick (BB) produces all speckled offspring (WB) This type of inheritance is known as:

If you cross a red plant with a white plant and the offspring is pink, what is that called?

Incomplete Dominance

Define codominance

Blood is determined by individual combinations of the following gene varieties.I^A,I^B,and i . When I^AandI^B exist together, they make blood type AB (which has 2 dominant genes). This shows us that blood type is an example.