Biology
Grade-10
Easy
Question
Gene interactions occur as:
- A single gene controls a single character.
- A pair of genes control a single character.
- A pair of genes control two characters.
- A single character is controlled by more than one gene pair.
Hint:
Many genes are involved in gene interaction.
The correct answer is: A single character is controlled by more than one gene pair.
- When more than two genes influence the expression of a trait, it is called as gene interaction.
- Epistasis is the the terminology used to describe gene interactions.
- Dominant and recessive are examples of epistasis.
- In dominance, the dominant allele in a pair will suppress or mask the effect of the recessive allele.
- Example of this dominant epistasis is the expression of yellow color seeds when the genotype of the seed is Yy. Here, Y is dominant allele and y is recessive and Y masks the effect of y.
Related Questions to study
Biology
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:
BiologyGrade-10
- 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.
Biology
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?
BiologyGrade-10
Biology
In incomplete dominance __________________________.
In incomplete dominance __________________________.
BiologyGrade-10
Biology
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 _________.
BiologyGrade-10
Biology
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?
BiologyGrade-10
Biology
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?
BiologyGrade-10
- Dominant allele will mask the effect of the recessive allele.
Biology
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?
BiologyGrade-10
Biology
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:
BiologyGrade-10
Biology
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?
BiologyGrade-10
- 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
Biology
Sickle cell anemia is an example of incomplete dominance.
Sickle cell anemia is an example of incomplete dominance.
BiologyGrade-10
Biology
A mixture of both the alleles is seen in the progeny in co-dominance.
A mixture of both the alleles is seen in the progeny in co-dominance.
BiologyGrade-10
Biology
The genotypic ratio and phenotypic ratio are same in co-dominance.
The genotypic ratio and phenotypic ratio are same in co-dominance.
BiologyGrade-10
Biology
The phenotypic ratio in co-dominance is___________.
The phenotypic ratio in co-dominance is___________.
BiologyGrade-10
Biology
The following is an example of______________.
The following is an example of______________.
BiologyGrade-10
Biology
How many pair of contrasting characters were studied by Mendel?
How many pair of contrasting characters were studied by Mendel?
BiologyGrade-10
