Principles of Inheritance and Variation
- Out of 8 ascospores formed in Neurospora the arrangement is 2a: 4a: 2a showing
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In Neurospora, products of meiosis remain linearly arranged and undergo one mitosis. Crossing over occurs in four strand stage.
Correct Option: C
In Neurospora, products of meiosis remain linearly arranged and undergo one mitosis. Crossing over occurs in four strand stage.
- A child of O-group has B-group father. The genotype of father will be
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The genotype of the child would be IºIº (recessive). Hence the genotype of the father can only be IBIO.
Correct Option: D
The genotype of the child would be IºIº (recessive). Hence the genotype of the father can only be IBIO.
- An allele is dominant if it is expressed in
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Dominant alleles expresses itself in the homozygous as well as heterozygous condition. It is denoted by capital letter.
Correct Option: A
Dominant alleles expresses itself in the homozygous as well as heterozygous condition. It is denoted by capital letter.
- A gene pair hides the effect of another. The phenomenon is
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Epistasis is the phenomenon of masking or supressing the phenotypic impression of a gene pair by a non allelic gene pair which impresses its own effect.
Correct Option: A
Epistasis is the phenomenon of masking or supressing the phenotypic impression of a gene pair by a non allelic gene pair which impresses its own effect.
- In a cross between AABB × aabb, the ratio of F2 genotypes between AABB, AaBB, Aabb and aabb would be
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Genotype is the genetic make up of an individual irrespective of the mendelian characters or genes impressing.
Correct Option: C
Genotype is the genetic make up of an individual irrespective of the mendelian characters or genes impressing.