During, the sperm cell fuses with the egg cell to form a one-celled embryo. a. meiosis b. mitosis c. gastrulation d. fertilization Somatic cells in a goldfish have 92 chromosomes. An egg produced by a female would be \...
Cells of every adult multicellular organism trace their ancestry to thezygote, the first cell of a new individual that is formed by union of sperm and egg. During development, cells undergo repeated mitosis and division and ultimately differentiate into specialized cells that have structures and func...
Egg and sperm cells are produced by a special type of nuclear division called meiosis in which the number of chromosomes is halved. Division of the cytoplasm is called cytokinesis. Somatic cells reproduce by mitosis, which results in two cells identical to the one parent cell. Interphase is ...
Why is it that when the cell divides in mitosis, it does not form 4 cells, but in meiosis it does? How does asexual reproduction by mitosis contribute to the growth and/or survival of the organism? What are the advantages and limitations of mitotic division as a method of reprodu...
The parenchyma is a loose tissue filling the body cavity and containing various cell types, including secretory, excretory, reproductive, and formative cells and their insoluble excretions, that fulfill important physiological functions (Hyman, 1951). ...
From transporting oxygen throughout the body to fighting infection, blood cell activity is vital to life. Blood cells are produced bybone marrow. The three major types of cells in the blood arered blood cells,white blood cells, andplatelets. ...
centromere,kinetochore- a specialized condensed region of each chromosome that appears during mitosis where the chromatids are held together to form an X shape; "the centromere is difficult to sequence" aster- star-shaped structure formed in the cytoplasm of a cell having fibers like rays that su...
In plants, meiosis creates a multicellular haploid organism, called a gametophyte , which in some groups is independent of the diploid plant. Gametes are produced by mitosis of the gametophyte, which then fuse to form the embryo. This cycle is called alternation of generations. ...
4b,c). While bik1Δ and Kar9 triple-interface mutations separately had no or little effect on the outcome of mitosis at 25 °C, their combination caused the accumulation of late-anaphase cells with elongated spindles that remained in the mother cell and failed to segregate an SPB to the...
the nuclei of some specialized cells, especially polyploid cells, may divide by simple amitosis. Highly polyploid nuclei may divide not only into two but into many parts, and they can also divide by budding. This may result in the division of whole chromosome sets, or the segregation of geno...