#Question id: 4765
#XL - R Botany
The recessive mutant allele that causes cystic fibrosis is much more frequent in Caucasians population than in other world populations. Some scientists believe heterozygotes must have had a survival advantage during plagues such as cholera that occasionally swept through this population. What concept does this illustrate?
#Question id: 4768
#XL - R Botany
A trait that appears to be dominant in one sex but recessive in the other is called:
#Question id: 4781
#XL - R Botany
Two non allelic gene P and Q governed Glume color in sorghum.
P= blakish purple
Q = raddish purple (dependent over P gene )
If heterozygous Raddish purple were cross with homozygous brown color .What are phenotypic ratio of progeny?
#Question id: 4784
#XL - R Botany
The following is the biochemical pathway for purple pigment production in flowers of sweet pea Recessive mutation of either gene A or B leads to the formation of white flowers. A cross is made between two parents with the genotype: AaBb x aabb. Considering that the two genes are not linked, the phenotypes of the expected progenies are
#Question id: 4785
#XL - R Botany
One form of white eye is a recessive X-linked gene in Drosophila. From a mating of a heterozygous wild-type Drosophila female with a white-eyed male, what is the probability of wild type offspring?
#Question id: 4790
#XL - R Botany
The F2 genotypes of two independently assorting gene A and B with complete dominance result in a 9 : 3 : 3 : 1 ratio of phenotypes if there is no interaction between the genes. Following modify phenotypic ratio of 9:3:3:1 given as following table (p - phenotype) Which of the following correct matching of gene interaction and their deviated phenotype ratio?