CHILD DEVELOPMENT PEDAGOGY

Detailed explanation-1: -Germ cells can divide by mitosis to make more germ cells, but some of them undergo meiosis, making haploid gametes (sperm and egg cells). Fertilization involves the fusion of two gametes, usually from different individuals, restoring the diploid state.

Detailed explanation-2: -The process of meiosis produces genetically unique reproductive cells called gametes, which have half the number of chromosomes as the parent cell. Fertilization, the fusion of haploid gametes from two individuals, restores the diploid condition.

Detailed explanation-3: -Chromosome number is reduced during meiosis because a single round of DNA replication is followed by two rounds of chromosome segregation (Fig. 1). Fusion of two gametes during sexual reproduction restores the diploid chromosome complement.

Detailed explanation-4: -At fertilization, male and female gametes fuse to restore diploidy in a zygote, which develops into a new life. At sex maturation, diploid cells enter into meiosis, culminating in the production of haploid gametes.

Detailed explanation-5: -The process of meiosis reduces the resulting gamete’s chromosome number by half. Fertilization, the joining of two haploid gametes, restores the diploid condition.