Question

Лабораторная работа Сравнение процессов развития половых клеток признаки яйцеклетка сперматозоиды размеры подвижность запас питательных веществ численность набор хромосом

Answer 1

1 яйцекетка крупная ...спермотозоид микроскопического размера ...2 яйцеклетка неподвижна ...он подвижный ...3 в яйцеклетке много в С нет питательных веществ ...4 мало ...очень много ...5 одинаковый набор хромосом

Answer 2

Comparing the Development of Gametes: Egg Cell and Sperm

When comparing the development of egg cells (ova) and sperm cells (spermatozoa), several key characteristics can be considered.

1. Size: - The size of egg cells is generally larger than that of sperm cells. Egg cells are among the largest cells in the human body, visible to the naked eye, while sperm cells are much smaller and require a microscope for observation.

2. Mobility: - Egg cells are non-motile and remain in place within the female reproductive system, awaiting fertilization. In contrast, sperm cells are highly motile and are designed to travel through the female reproductive tract to reach the egg for fertilization.

3. Nutrient Reserves: - Egg cells contain a significant amount of nutrient reserves, including proteins and other essential molecules, to support the early stages of embryonic development after fertilization. In contrast, sperm cells do not carry a substantial amount of nutrient reserves and are primarily focused on delivering the paternal genetic material to the egg.

4. Chromosome Number: - Egg cells and sperm cells have different chromosome numbers. Egg cells contain a haploid set of chromosomes (23 in humans), while sperm cells also contain a haploid set of chromosomes. When the egg is fertilized by a sperm, the resulting zygote will have the full diploid set of chromosomes (46 in humans).

In summary, egg cells and sperm cells exhibit distinct characteristics in terms of size, mobility, nutrient reserves, and chromosome number, reflecting their specialized roles in the process of sexual reproduction.

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