Which one of the following cannot be explained on the basis of Mendel's Law of Dominance?
the discrete unit controlling a particular character is called a factor
Out of one pair of factors, one is dominant and the other recessive
Alleles do not show any blending and both the characters recover as such in F2 generation
Alleles do not show any blending and both the characters recover as such in F2 generation
C.
Alleles do not show any blending and both the characters recover as such in F2 generation
The law of dominance does not occur universally. After Mendel, several cases were recorded by scientists, where a clear deviation from the law of dominance was seen. Such a deviation may be seen in the form of Incomplete dominance or Blending inheritance Co-dominance.
Where F1 hybrids exhibited a mixture of blending or character of two parents, the case is considered as that of incomplete dominance blending inheritance. It simply means that two genes of an allelomorphic pair are not related as dominant or recessive, but each of them expresses itself partially. In the case of 4 o' clock plant, when plants with red flowers are crossed with plants having white flowers are crossed with plants having a white flower, the F1 hybrids bear a pink flower. When these pink flowers are self-pollinated, they develop red, pink and white flowers in the ratio of 1: 2:1 respectively.
The genotype of plant showing the dominant phenotype can be determined by
test cross
dihybrid cross
pedigree analysis
pedigree analysis
Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?
Two X - chromosomes
Only one Y- chromosomes
Only one X - chromosome
Only one X - chromosome
Which one of the following is a wrong matching of a microbe and its industrial product, while the remaining three are correct?
Yeast - statins
Acetobacter aceti - acid
Clostridium Butulicum - lactic acid
Clostridium Butulicum - lactic acid
Sweet potato is homologous to
potato
colocasia
ginger
ginger
