Epitasis implies_____________________? April 21, 2025 by admin A. One gene pair enhances phenotype expression of another gene pair B. Many gene together control a parucular phenotype C. One pair of gene can completely mask the expression of another gene pair D. One gene pair independently controls a phenotype
After self pollination of red flowered plants out of 40 plants of progeny were white flowered. this indicates that the plants are__________________? April 21, 2025 by admin A. Heterogeneous B. Heterozygous C. Homogenous D. Homozygous
haploids are better for mutation studies because in them all the mutations whether recessive or dominant are expressed as_______________? April 21, 2025 by admin 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
Red (RR) is crossed with white (ww). All the (Rw) offsprings are pink this is an indication that the R gene is_________________? April 21, 2025 by admin A. Recessive B. Incomplete dominant C. Mutant D. Dominant
Hereditary variations in plants have been produced by the use of________________? April 21, 2025 by admin A. DDT B. X-rays C. Gibberrellic acid D. Auxins
Which of the following had great influence on Drawing during during formulation of his theory of natural selection_________________? April 21, 2025 by admin A. Lamark’s idea on inheritance of acquired character’s B. Mathis’s essay on population C. Mendes’s experiment on pea D. De Vries theory of mutation
The organic evolution look place about__________________? April 21, 2025 by admin A. 100,000,000 years B. 200,000,000 ears C. 300,000,000 years D. Still occurring
In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________? April 21, 2025 by admin A. Dominant lethal genes in heterozygous individuals B. Dominant lethal genes in homozygous individuals C. Dominant epistasis D. None of the above
If the haploid number of chromosomes in a plant is 12, then the number of chromosomes in monosmic is_________________? April 21, 2025 by admin A. 12 B. 24 C. 22 D. 23
Presence of slight differences in identical twins support the hypothesis that___________________? April 21, 2025 by admin A. Single gene may produce multiple effects B. Dominance may be incomplete C. The environment effects the expression of genetic character D. Genetic trails are influence by many genes
