Genetics
Covers fundamental genetics concepts including Mendelian inheritance, genetic terminology, alleles, dominance patterns, and human genetics.
Questions
When a tall plant is crossed with a dwarf plant, this type of cross is called ___________.
- dihybrid cross
- monohybrid cross
- reciprocal cross
- trihybrid cross
- back cross
Mendel conducted his studies on factors of inheritance on _________.
- wild pea
- pigeon pea
- chick pea
- garden pea
- black pea
A cross used to ascertain whether a dominant is homozygous or heterozygous is termed as __________.
- monohybrid cross
- dihybrid cross
- back cross
- reciprocal cross
- test cross
Inheritance of skin colour in mammals is usually ________.
- monogenic
- multiple allelism
- polygenic
- pseudoallelism
- pleiotropic
Visible characteristics of an organism are called ____________.
- phenotype
- genotype
- alleles
- homozygous
- heterozygous
Law of dominance and recessiveness was the result of _________.
- back cross
- dihybrid cross
- incomplete dominance
- test cross
- monohybrid cross
Mendel did not postulate about _________.
- dominance
- segregation
- linkage
- independent assortment
- monohybrid cross
Who gave the concept of one gene-one enzyme?
- Watson and Crick
- Khurana
- Griffith
- McCarty and Mcleoid
- Beadle and Tatum
Seggregation of alleles takes place during __________.
- meiosis
- cleavage
- fertilisation
- crossing over
- mitosis
When an allele fails to express itself in presence of the other allele the former is said to be _________.
- recessive
- dominant
- co-dominant
- complementary
- supplementary
Which of the following are the sex chromosomes in human males?
- Homozygous
- Heterozygous
- Autosomal
- Hemizygous
- Nullizygous
Which of the following terms represents a pair of contrasting character or factors?
- Allele
- Gene
- Homozygous
- Heterozygous
- Phenotype
Process of mating of individuals who are more closely related than the average of the population to which they belong is called ____________.
- true breeding
- hybridization
- heterosis
- inbreeding
- crossing over
Most of the human genetic diseases are determined from _____________.
- pedigree analysis
- genetic engineering
- embryology
- eugenics
- tissue culture
Allele that produces independent effects in its heterozygous condition are called __________.
- epistatic
- complementary
- supplementary
- co-dominant
- dominant
Phenomena in which an allele of one gene suppresses activity of an allele of another gene is called as __________.
- dominance
- inactivation
- epistasis
- suppression
- codominance
Genetic composition of an organism is called _________.
- genotype
- phenoptype
- alleles
- dominant
- recessive
RR(red ) is crossed with rr (white). All the Rr offsprings are pink. This is an indication that R gene is ___________.
- hybrid
- recessive
- incompletely dominant
- co-dominant
- mutant
Independent assortment of Mendel was proved by __________.
- monohybrid cross
- dihybrid cross
- back cross
- lethal genes
- incomplete dominance