Nucellar cell ploidy is 2n . Given , 2n=16 n=16/2 = 08 leaf cell ploidy 2n. thus 2n=16 megaspore mother cell ploidy also 2n. Read More …
Author: Dr. Karuna Sharma
Ph.D. Environmental sciences, M.Sc. Zoology, Gold medalist, Goa University Topper. Conduct classes for NEET and NET Life Sciences
In a peafowl, the allele for India blue (B) is dominant over the allele for white (b). The allele for long feathers (F) is dominant over the allele for short feather (f) .Pure breed India blue and long feathered peacock was crossed with pure breed white with short feathered peahen. a0 State the Phenotype and genotype of F1 progeny. b) Two offsprings of F1 were mated together. calculate expected phenotypic ratio of F2.
b)
In cats, the allele for grey fur (G) is dominant over allele for beige fur (g). The allele for solid coat (S) is dominant over the allele for striped coat (s). A pure breeding solid, beige cat is crossed with pure breeding striped , grey cat..a) state the genotype and phenotype of the F1 individuals produced as a result of this cross, b)Calculate the phenotypes resulting from a cross between a pure breeding solid, beige cat and an F1 offspring.
The genotype of F1 is SsGg while phenotype is Solid with Grey cat
In a cross between a tall pea with yellow seeds (DdYy) and a tall plant with green seeds (Ddyy), what proportion of the offsprings could be expected to be : a) Tall and green, b) Dwarf and green?
Let us draw a cross for the above question. In the above cross it is seen that a) 1/3 offsprings may Read More …
How is sex determined in Honey bee?
The honey bee exhibits Haploid- diploid method of sex determination. The female bee is diploid with 32 number of chromosomes while male bee is Read More …
If the deploid number of chromosomes in an angiosperm is 18, how many chromosomes would there be in a Pollen grain and in an endosperm?
In the given Angiosperm, 2n= 18 therefore n= 18/2 = 09 Pollen grain is the male gamete and gametogenesis is a result of meiosis Read More …
How was Human Insulin produced with help of Biotechnology?
An American Company, Eli Lily, produced Human Insulin in 1983. Human Insulin is formed as Proinsulin in the Pancreas by the beta cells of Read More …
How do Allien species cause biodiversity loss
When some foreign species of plants or animals are introduced to some place, they are termed Allien species and most often they are invasive Read More …
How does HIV weaken the immune system after it enters the Human Body?
After getting into the human body, Human Immune Deficiency Virus, enters the macrophages where the RNA genome of the virus undergoes a process of Read More …
Microbes enrich the nutrient quality of the soil. how?
Microbes that enrich the nutrient quality of soil by enhancing the availability of nutrients to soil are called biofertilisers. Rhizobium Symbiotic Bacterium that Read More …
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