Briefly describe, in your own words, how the single cell formed at fertilization differentiates into different types of cells. How is the mitotic phase different from meiosis? Explain why all of the cells of your body that have 23 pairs of chromosomes are identical in their genetic make-up. ...
Gametes are formed in the reproductive organs through meiosis. During the process the gamete chromosomes are first duplicated, then the cells divide twice, producing cells that have one set of chromosomes, called haploid. When two individual haploid gametes fuse to produce offspring, a diploid cell...
Meiosis, which occurs only in the formation ofgametes, is a specialized form of cell division. 仅仅发生在配子形成中的减数分裂是一种特殊形式的有丝分裂. 辞典例句 The fusion of twogametesthat are not closely related. 异系结合无密切亲缘关系的两种生物的结合. ...
Gametes are an organism's reproductive cells and have also been referred to as "sex cells." Male gametes are called sperm; in females, they are called "ova" or egg cells. Gametes are haploid cells, which means that each cell carries one copy of each chro
meiosis occurs B. the ovum finishes meiosis II C. sperm become capacitated D. gametes are formed E. the male and female pronuclei fuse Which of the following systems controls gamete (sex cell) production? A. Nervous B. Endocrine Production of gametes is called: a. apoptosis b. blasto...
4.A sexual spore is formed after the fusion of gametes. 有性孢子是由生殖细胞结合而形成的. 5.Meiosis, which occurs only in the formation of gametes, is a specialized form of cell division. 仅仅发生在配子形成中的减数分裂是一种特殊形式的有丝分裂. 6.On the other hand, some donors update ...
Tetraploids from these families would be produced by heterozygous genotypes. There is, at the moment, no assurance that 2n pollen and eggs of a specific parent are formed by the same restitutional mechanism. Thus, they are excluded in the mating scheme. Another distinct feature of the present...
Question: Do somatic cells make gametes? Sperm and egg: Gametes or gametic cells are sperm cells in men and egg cells, or ovum, in women. The sperm is the smallest cell in the human body. The ovum is the largest cell found in the human body. ...
They are derived from a single generative cell, which is formed as the smaller cell by unequal cell division in the microspore after meiosis. Limited information is available about these male gametic cells, beyond observations by electron microscopy, because each is surrounded by the cytoplasm of ...
These genes are pref- erentially expressed in spermatocytes, which are supposed to be the regulator of meiosis. Interestingly, a total of 7 genes out of these genes belong to HOX family, indicating the important roles of HOX genes play in meiosis process. Pathway involved in spermatogenesis....