Question

Write a brief note on sexual reproduction in animals.

Answer 1

sexual reproduction is due to fusion of gametes . it bring variation and so it responsibelfo evolution . it occurs in eukaryotesThe outcome of sexual reproduction most often is the production of resting spores that are used to survive inclement times and to spread. There are typically three phases in the sexual reproduction of fungi: plasmogamy, karyogamy and meiosis.

Answer 2

Sexual Reproduction is a process of development of new individual through formation and fusion of male & female gametes. 
Sexual reproduction involves four processes:
i) Formation of haploid cell, the gametes (process-gametogenesis)
ii) Fusion of two gametes forming diploid cells (zygotes after fertilization),
iii) Repeated mitotic divisions of zygote to form embryo,
iv) growth of embryo into new individual.