Biology
Grade-10
Easy
Question
A gene showing co-dominance has:
One allele dominant over the other.
Alleles are recessive to each other.
Both alleles express independently of each other in the phenotype.
Alleles are tightly linked on same chromosome.
One allele dominant over the other.
Alleles are recessive to each other.
Both alleles express independently of each other in the phenotype.
Alleles are tightly linked on same chromosome.
Hint:
The phenotype of the offspring will be a result of the complete expression of both the alleles independently.
The correct answer is: Both alleles express independently of each other in the phenotype.
- In co-dominance, none of the allele is dominant over the other.
- Expression of both the alleles will be seen in the phenotype of the offspring.
- ABO blood group is an example of co-dominance.
- In individuals with AB blood group, the allele A and B will both be expressed independently.
- Gene is the unit of heredity.
- Gene has two alleles.
- Two alleles can be same or different (like YY or Yy).
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Which branch of biology focuses on the study of inheritance?
Which branch of biology focuses on the study of inheritance?
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Phenotype means the ______________________ of an individual.
Phenotype means the ______________________ of an individual.
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Semi-dominance or partial dominance is also known as:
Semi-dominance or partial dominance is also known as:
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Coat color in rabbit is an example of:
Coat color in rabbit is an example of:
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When two or more independent genes present on the same or different chromosomes interact to produce a new expression it is called:
When two or more independent genes present on the same or different chromosomes interact to produce a new expression it is called:
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Gene interactions occur as:
Gene interactions occur as:
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In case of co-dominance:
- A, B and O are alleles responsible for blood groups.
- Neither of the allele is completely dominant over other.
- Example: For a person with AB blood group, the expression of both A and B alleles occurs.
In case of co-dominance:
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- A, B and O are alleles responsible for blood groups.
- Neither of the allele is completely dominant over other.
- Example: For a person with AB blood group, the expression of both A and B alleles occurs.
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Which of the following is a term used to refer to a gene variant?
Which of the following is a term used to refer to a gene variant?
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In incomplete dominance __________________________.
In incomplete dominance __________________________.
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When two or more than two genes affect the expression of each other it is known as _________.
When two or more than two genes affect the expression of each other it is known as _________.
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How is incomplete dominance and co-dominance different from a normal Mendelian cross?
How is incomplete dominance and co-dominance different from a normal Mendelian cross?
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Which of the following is the genotype for blood group B?
- Dominant allele will mask the effect of the recessive allele.
Which of the following is the genotype for blood group B?
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- Dominant allele will mask the effect of the recessive allele.
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Mendel obtained what phenotypic ratio in the F2 generation in his dihybrid cross?
Mendel obtained what phenotypic ratio in the F2 generation in his dihybrid cross?
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If the traits of two alleles blend together and express then the inheritance pattern is:
If the traits of two alleles blend together and express then the inheritance pattern is:
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ABO blood groups are an example of which of the following?
- A gene is the unit of heredity
- A gene contains two alleles
- Both alleles can be same or different
- The allele can be dominant or recessive
ABO blood groups are an example of which of the following?
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- A gene is the unit of heredity
- A gene contains two alleles
- Both alleles can be same or different
- The allele can be dominant or recessive
