Question

Партеногенез не встречается:а)у тлейб)муравьёв и пчёлв)некоторых ящерицг)млекопитающихСлияние двух гамет называют:а)оплодотворениемб)гаметогенезомв)партеногенезомг)фрагментациейПериод размножения клеток-предшественников отличается от периода их созревания тем, что:а)в период размножения клеток-предшественников происходит митоз, а в период созревания-мейозб)в период размножения клетки-предшественники не делятся, а в период созревания они делятся митотическим путёмв)в период размножения клеток-предшественников происходит мейоз, а в период созревания-митозг)в период размножения клетки-предшественники растут, а на этапе созревания делятся

Answer 1

1. партеногенеза нет у млекопитающих.
2. слияние 2 гамет-оплодотворение
3. в

Answer 2

Parthenogenesis and Gamete Fusion

Parthenogenesis: Parthenogenesis is a form of asexual reproduction in which an egg develops into an individual without fertilization by a male gamete. It is known to occur in various species, including some insects, reptiles, and fish. However, it is important to note that parthenogenesis does not occur in all species mentioned in the question.

- Parthenogenesis does not occur in mammals, including mammals . - Parthenogenesis is known to occur in some species of lizards . - Parthenogenesis is observed in certain species of ants and bees .

Gamete Fusion: The fusion of two gametes is known as fertilization or oploidogamy. This process involves the fusion of a male gamete (sperm) with a female gamete (egg) to form a zygote.

Cell Reproduction Periods

The period of cell reproduction and maturation involves distinct processes.

- The period of cell reproduction involves mitosis, where cells divide to produce two identical daughter cells. - The period of cell maturation involves meiosis, a process where cells undergo two rounds of division to produce four daughter cells with half the number of chromosomes as the parent cell.

Therefore, the correct statement regarding the difference between the period of cell reproduction and maturation is: In the period of cell reproduction, cells undergo mitosis, while in the period of maturation, they undergo meiosis.

This distinction is crucial for the development and maturation of gametes in sexual reproduction.

I hope this information is helpful! If you have further questions or need more details, feel free to ask.