Owing to the structure of the metacentric chromosomes, they are composed of two equal-sized arms, and in the cell division phase, they appear as ‘v’ shaped structures during themetaphaseof the cell division. The presence of metacentric chromosomes is mostly observed in primitive organisms.Karyoty...
Thekey differencebetween cell plate and metaphase plateis that the cell plate is a physicalinterphasepresent only in plants and in some algal cells, while the metaphase plate is an imaginary interphase present in bothplant and animal cells. Cell divisionis common to all living cells. It has two...
Meiosis I, the first half of the total cell division process of sexual reproductive cells, has four phases: prophase I, metaphase I, anaphase I and telophase I. Before mitosis or meiosis I begin, all cells go through interphase. In interphase , the cell is preparing for cell division and ...
Meiosis I | Overview & Stages from Chapter 8 / Lesson 11 147K What happens during meiosis? Learn the meiosis I stages: prophase, anaphase, metaphase, and telophase. Also, see the difference between meiosis I and II. Related to this QuestionWhat...
How do chromosomes behave in prophase 1 and metaphase 1 and how does this allow variation to take place? What is main difference between monohybrid and dihybrid cross? What is the difference between chromatin and histone? Explain the difference between chromatins and chromatids...
When the thymidine pulse is applied to diploid lung fibroblasts at mid-S-phase, differential staining colours metaphase chromosomes a pale blue. Performing the corresponding experiment with V-79 cells, neither a pale blue nor dark red staining is obtained, but rather an intermediate shade, showing...
On postnatal day 60, the F1 offspring were tested for anxiety-like behavior first by elevated plus-maze (EPM) and then by open field test (OFT) one week later. Offspring from matings between unstressed parents constituted the controls. During EPM, the level of anxiety was quantified by the...
Fun fact! In the sex chromosomes of biologically male individuals (XY), crossing over can occur only betweencertain regionsof the X and Y chromosomes. After prophase I comes metaphase I, in which each of the tetrads line up at the center of the cell. Then, in anaphase I, the two chrom...
On the other hand, cytokinesis follows telophase and involves the physical splitting of the cell's cytoplasm into two daughter cells, each containing one of the newly formed nuclei. 13 In telophase, the chromosomes that were previously condensed and separated at the metaphase plate begin to de...
The process in cell division by which the nucleus divides, typically consisting of four stages, prophase, metaphase, anaphase, and telophase, and normally resulting in two new nuclei, each of which contains a complete copy of the parental chromosomes.Also called karyokinesis. Meiosis Rhetorical unde...