How is equal genetic contribution of male and female parents ensured in the progeny?

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At the time of fertilization,the gametes in male nd female body undergoes mitosis and thus each gamete has single set of chromosomes i.e.,2n to n ...at the time of fusion the progeny gets  one from father nd one from mother and results again in formation of 2n gamete ...this process in continued on and on

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During the formation of progeny there is a fusion of male and female gametes due to which the progeny formed have half set of male parents and half of female .so they equally contribute genetivally in the formation of progeny.........hope it's correct

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Hi Dude. During zygote formation half of the DNA comes from the mother through egg and half of the DNA comes from father through sperm.When they are fused the zygote has characters half from the mother and half from father.

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@Avantika..... female and male gametes undergo meiosis and not mitosis...........

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23 pair of chromosome were distributed by male and female.....*(I think sO)*

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Anjali they undergo mitosis first then meiosis

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Equal Genetic Contribution of Male and Female Parents in Progeny

In sexual reproduction, the genetic material from both male and female parents contributes to the formation of the progeny. This ensures the diversity and variability of traits in the offspring. The equal genetic contribution of male and female parents is ensured through a series of reproductive processes and mechanisms.

Fertilization
During sexual reproduction, the male gametes (sperm) and female gametes (eggs) fuse together in a process called fertilization. This fusion combines the genetic material from both parents, resulting in the formation of a zygote, which develops into the progeny.

Meiosis
To ensure equal genetic contribution, both male and female parents undergo meiosis, a specialized form of cell division that reduces the number of chromosomes in the gametes. Meiosis consists of two rounds of division, resulting in the production of haploid gametes with half the number of chromosomes compared to the parent cells.

Random Assortment of Chromosomes
During meiosis, the homologous chromosomes pair up and exchange genetic material through a process called recombination or crossing over. This random assortment and exchange of genetic material contribute to the unique combination of traits in the offspring. The chromosomes segregate independently during meiosis, leading to further genetic diversity.

Sex Determination
In many species, sex determination is governed by the presence of specific sex chromosomes. For example, in humans, females have two X chromosomes (XX), while males have one X and one Y chromosome (XY). The equal chance of either sex being produced ensures the equal genetic contribution of male and female parents.

Epigenetic Factors
Apart from the genetic material itself, epigenetic factors also play a role in gene expression and regulation. These factors can influence the way genes are activated or silenced, leading to variations in traits. Both male and female parents contribute epigenetic marks to the offspring, ensuring a balanced contribution from both.

Overall, the equal genetic contribution of male and female parents in the progeny is ensured through processes like fertilization, meiosis, random assortment of chromosomes, sex determination, and epigenetic factors. These mechanisms guarantee the diversity and variability of traits in the offspring, allowing for adaptation and evolution.

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