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Question
Which one of the following generates new genetic combinations leading to variations?
Which one of the following generates new genetic combinations leading to variations?
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Solution
The correct option is C Sexual reproduction
Sexual reproduction involves the formation and fusion of male and female gametes. Gamete
formation in diplod organisms is accomplished through meiotic cell division which involves crossing over between non-sister chromatids of homologous chromosomes leading to new genetic recombination in gametes. Random fusion of these male and female gametes lead to the genetic variability in the offspring which although resemble their parents but can also exhibit new traits of their own.
Vegetative propagation in plants is a type of asexual reproduction carried out by structures known as vegetative propagules. Offspring of asexual reproduction are morphologically and genetically similar to each other and to their parents. They are each others’ exact replica and are termed as ‘clones’. They don’t give rise to variations.
Parthenogenesis is a type of agamogenesis in which the female gamete gives rise to offsprings without fertilization. Since there is no mixing of genetic materials, there is no variation.
Parthenocarpy is the process by which fruits are developed from unfertilized ovules in plants. These fruits don’t contain seeds. They are seedless.
Sexual reproduction involves the formation and fusion of male and female gametes. Gamete
formation in diplod organisms is accomplished through meiotic cell division which involves crossing over between non-sister chromatids of homologous chromosomes leading to new genetic recombination in gametes. Random fusion of these male and female gametes lead to the genetic variability in the offspring which although resemble their parents but can also exhibit new traits of their own.
Vegetative propagation in plants is a type of asexual reproduction carried out by structures known as vegetative propagules. Offspring of asexual reproduction are morphologically and genetically similar to each other and to their parents. They are each others’ exact replica and are termed as ‘clones’. They don’t give rise to variations.
Parthenogenesis is a type of agamogenesis in which the female gamete gives rise to offsprings without fertilization. Since there is no mixing of genetic materials, there is no variation.
Parthenocarpy is the process by which fruits are developed from unfertilized ovules in plants. These fruits don’t contain seeds. They are seedless.
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