Gametogenesis is a process through which the gametes i.e. eggs and sperms are formed in an organism. This process takes place in sexually reproducing organisms. The formation of egg cells and sperm cells is termed as oogenesis and spermatogenesis respectively. This process takes place by the division of diploid gametocytes by meiosis and various haploid gametes are produced.
The gametes in the plants are produced by mitosis during gametophyte phase. The important feature of gametogenesis is meiosis during which the homologous chromosomes are paired up and genetic recombination takes place between them. The recombination allows the diversity within the species.
How is an F′ factor different from an F factor?
Meiotic nondisjunction is much more likely than mitotic nondisjunction. Based on
In fruit flies, curved wings are recessive to straight wings,
What is an advantage and a disadvantage of this repair system?
Explain the type of speciation (allopatric, parapatric, or sympatric
The raw material for evolution is random mutation. Discuss whether or
With regard to the timing of conjugation, explain why the recipient
A woman who is heterozygous, Bb, has brown eyes;
A recessive allele in mice results in an unusally long neck.
Why is an antibody used in this experiment? From