MCQ
Hybrid vigour is induced by
- AClonal selection
- BCrossing of plant
- ✓Crossing two plants
- DSpecies differentiation
✓
Answer
Correct option: C.
Crossing two plants
c
It's Obvious
It's Obvious
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Mark the given statements True (T) or False (F).
(i) Inheritance is the process by which characters are passed on from parents to progeny.
(ii) Mendel conducted hybridisation experiment on wild peas for seven years and proposed the laws of inheritance in living organisms.
(iii) The first hybrid generation is also called filial progeny or $F_2$
(iv) In a monohybrid cross, the phenotypic and genotypic ratio in $F_2$, generation is 3:1 and 1:2:1 respectively.
(v) According to Mendel, characters are controlled by discrete units called factors and now we call them genes.
(vi) Genes which code for a pair of contrasting traits are known as alleles.
(vii) For a character like height, TT and tt are called phenotype of organism while descriptive terms tall and dwarf are genotype.
(viii) Both the alleles can be similar in case of homozygotes (eg. TT or tt) or can be dissimilar as in the case of heterozygote (eg. Tt) for a particular trait (eg. height).
(ix) During the process of meiosis, the segregation of alleles is a random process and so there is a 50% chance of a gamete containing either allele.
→(i) Inheritance is the process by which characters are passed on from parents to progeny.
(ii) Mendel conducted hybridisation experiment on wild peas for seven years and proposed the laws of inheritance in living organisms.
(iii) The first hybrid generation is also called filial progeny or $F_2$
(iv) In a monohybrid cross, the phenotypic and genotypic ratio in $F_2$, generation is 3:1 and 1:2:1 respectively.
(v) According to Mendel, characters are controlled by discrete units called factors and now we call them genes.
(vi) Genes which code for a pair of contrasting traits are known as alleles.
(vii) For a character like height, TT and tt are called phenotype of organism while descriptive terms tall and dwarf are genotype.
(viii) Both the alleles can be similar in case of homozygotes (eg. TT or tt) or can be dissimilar as in the case of heterozygote (eg. Tt) for a particular trait (eg. height).
(ix) During the process of meiosis, the segregation of alleles is a random process and so there is a 50% chance of a gamete containing either allele.
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