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11. A male snail homozygous for dextral alleles is crossed with a female homozygous for sinistral alleles. All the F1 individuals showed sinistral phenotype. When F1 progeny snails were self-fertilized […]

10. Maternal inheritance of coiling of shell in snail (limnaea peregra) is well established. The dextral coiling depends on dominant allele D and sinistral coiling depends upon recessive allele d. […]

9. In Neurospora, the mutant stp exhibits erratic stop-and-start growth.  When a female of stp strain is crossed with a normal strain acting as a male, all progeny individuals showed […]

8. In Neurospora, the mutant stp exhibits erratic stop-start growth. The mutant site is known to be in the mitochondrial DNA. If an stp strain is used as the female […]

7. The characteristic of mitochondrial genome is? (1) Intron free DNA (2) Repetitive DNA (3) Polycistronic transcription (4) Satellite DNA Introduction: The mitochondrial genome is a distinct genetic system found […]

A poky Neurospora was crossed with normal Neurospora and following results were obtained ♀ Poky X ♂ Normal à all poky ♀Normal X ♂ Poky à all Normal The mode […]

5. Yeast with petite colony when crossed with wild type generates no petite colony. The most probable mode of inheritance is (1) Chloroplast      (2) Mitochondria (3) Episomal         (4) Nuclear Introduction: […]

4. Gene for fungal resistance in certain organism resides in chloroplast. If a susceptible female and resistant male are crossed, the progeny will be (1) All resistance (2) All susceptible […]

3. Extra-chromosomal inheritance can be detected by- (1) Back cross            (2) Test cross (3) Reciprocal cross    (4) Dihybrid cross Introduction: Extra-chromosomal inheritance refers to the transmission of genetic traits through […]

2. Reciprocal crosses yield different result in (1) Mendelian inheritance (2) Nuclear inheritance (3) Cytoplasmic inheritance (4) Polygenic inheritance Introduction Reciprocal crosses are fundamental genetic experiments where the parents’ sexes […]