WorksheetsPrinciples of inheritance and variation
Total questions: 16
Worksheet time: 8mins
Mendel's Law was rediscovered by
a. Correns, De Vries, Morgan
b. Correns, Tshermak,, Morgan
c. Correns, Tshermak,, Boveri
d. Correns, Tshermak,, deVries
If tall pea plant (Tt) is crossed with dwarf plant(tt), which one of the following will be obtained?
a. 25% recessive
b. 50% recessive
c. 75% recessive
d. No recessive
Red flower (RR) flower of Antirrhinum is crossed with white flower (rr). If the offspring obtained in F1 generation is pink flower, what type of inheritance will it be called?
a. Co-Dominance
b. Dominant Recessive
c. Epistasis
d. Incomplete Dominance
The allele which fails to express in the presence of another allele of the same character is called ______ allele.
a. Dominant
b. Codominant
c. Recessive
d. Multiple
If two genes lie very close to each other, it will show
a. high degree of crossing over
b. double crossing over
c. low linkage
d. nil or low crossing over
The genotype of a plant is AaBb. How many different type of genotype in gametes it can produce?
a. one
b. Two
c. Four
d. Eight
Application of Mendel's law is limited to
a. when parents are true breeding types
b. any crosses
c. linked genes only
d. very high recombinants
If the father is haemophilic and mother is normal, then the daughter will have chance to
a. be haemophilic
b. be carrier of haemophilia
c. be normal always
d. not receive any gene of haemophilia any time
Turner syndrome is
47+XXY
45+XO
46+XY
47+XX
Crossing over occurs in
a. Leptotene
b. Zygotene
c. Pachytene
d. Diplotene
When a single gene causes more than one effect, it is called
a. Multiple allele
b. Pleiotropy
c. polygenes
d. quantitative inheritance
Of the seven characters studied by Mendel, which of the following trait mentioned below is incorrect?
a. Axillary flower is dominant trait
b. green colour seed is a recessive trait
c. Green colour pod is a recessive trait
d. wrinkled seed is a recessive trait
Which of the following statement is considered to be universal?
a. within a pair of factors, one always dominates the other
b. Two factors of a trait separates during gamete formation
c. Blending of traits do not occur
d. None of the statements are universal
Given below are statements to differentiate between genotype and phenotype. On of the statements is incorrect. Find it.
a. Genotype is the gene equipment which determines the trait whereas phenotype is expression of the trait
b. Phenotype can be observed directly while genotypes cannot be observed but ascertained
c. genotype changes under environmental influence, phenotype do not
d. Phenotype is determined by genotype while genotype is not determined by phenotype
Which of the following statement is not correct about Incomplete dominance?
a. Both the allele expresses their typical phenotypes
b. Hybrid has new phenotype but has no gene
c. There is blending of traits
d. alleles show quantitative effect
Study the following statements on Sex Linked inheritance. Find the incorrect statement.
a. Father passes X linked allele to his daughter who in turn passes to her son
b. Mother passes the allele both to her daughter and son
c. X-linked alleles are more likely to express in females than males
d. Most of the sex linked traits are recessive
