A. There are many alleles of each gene in each call
B. There are two alleles of each gene in each cell
C. There is only one alleles of each gene present in each cell
D. Non3e4 of the above
Related Mcqs:
- A mutation which kills 50% of the individual that carry the mutation is known as_________________?
A. Lethal mutation
B. Sub lethal mutation
C. Vital mutation
D. Sub-vital mutation - When a wheat variety with red kernels (homozygous for two non allelic and independent dominant genes) is crossed with white kenneled wheat (homozygous for two recessive non allelic independent genes), the phenotypic ratio in the F2 generation would be________________?
A. 9:3:3:1
B. 9:7
C. 9:9:9:3:3:3:1
D. 1:4:6:4:1 - In crop improvement programmed haploids are of great importance because they__________________?
A. Are useful in studies on meiosis
B. Give homozygous lines following diplodization
C. Grow better under adverse conditions
D. Require only about half the amount of chemical fertilizers compared to diploids - If the frequency of a dominant phenotype in a stable population in 75% the frequency of the dominant allele in that population is____________________?
A. 50%
B. 75%
C. 25%
D. 40$ - A gene which enhances the natural mutations rate of another gene in the same genome is kanown as___________________?
A. Mutable gene
B. Mutator gene
C. Recepror gene
D. Articulator gene - The reason why mutations which are harmful do not eliminated from gene pool is that___________________?
A. They are recessive and carried by heterozygous individuals
B. Genetic drift occurs because of a small population in to offsprings
C. Making possible reproduction in all types of environments
D. They have future survival value - A cross of hybrid with one of its recessive parent is termed____________________?
A. Test cross
B. Backcross
C. Hybridization
D. Trihybrid - A gene which exhibits higher mutation rate than others is referred as___________________?
A. Mutator gene
B. Antimutalor gene
C. Mutable gene
D. Hot spot - A mutation is a change in_________________?
A. Chromosome number
B. RNA
C. DNA
D. Chromosome structure - Theory of mutation was given by___________________?
A. Mendel
B. De Vries
C. Tschermak
D. Watson
