Gametes (sperm and eggs) are created by meiosis, which creates four cells, each of which contains half the number of chromosomes as the original. During cell division, duplicated chromosomes line up down the center of the cell, and are then pulled apart to opposite poles of the cell. There...
What is the first process of mitosis? At what step do the chromosomes separate? Which of the following correctly matches a phase of the cell cycle with its description? a. G2: cell division b. S: immediately precedes cell division c. G1: follows cell division d. M: duplication of DNA...
Watch complete video answer for “At which stage, the homologous chromosomes separate due to re” of Biology Class 12th. Get FREE solutions to all questions from chapter CELL CYCLE AND CELL DIVISION.
(D) Mitotic phase occurs in bacteriophage View Solution Humans have 23 pairs of chromosomes. During mitotic cell division, sister chromatids get separated to opposite sides of the cell (during anaphase). resulting in two sets of identical chromosomes. The cell divides, becoming two distinct cells...
20% of the viable cells stained with a particular antibody in excess of the negative control. Briefly, according to the criteria of Catovsky et al (1991), BAL was defined when the score from two separate lineages was greater than 2 points on the same blast cell (B lymphoid lineage: 2 ...
the use of sexed sperm in humans is extremely limited and restricted to families with a history of X-linked diseases such as hemophilia or Duchenne’s muscular dystrophy44. Sex sorting utilizes the difference in the DNA content of the sex chromosomes to accurately separate the spermatozoa into tw...
For each experiment, freshly grown yeast cells were inoculated into 400-ml glucose-rich liquid medium, grown to mid log phase (OD600 = 0.5), and total RNA was purified as described by [51]. Hybridization experiments were performed as described in Figure 4. For each experiment, about 10 μ...
6 In a few cases, they harbor the Epstein-Barr virus (EBV).7, 8 Besides the large neoplastic B cells, varying amounts of small B lymphocytes (up to 50% of all cells) are found in the tumor tissue. TCRBCLs were first recognized as a separate entity by Ramsey et al4 in 1988, ...
In mammals, the two appear on separate chromosomes (human 7 and 17), but the sequence of each of the mammalian genes is similar to the others, and similar to the original single gene from which the two mammalian loci arose. The sequence of the wildtype hoxB1 gene (SEQ. ID. No. 5)...
For example, in ion exchange chromatography (usually anion exchange chromatography), it is possible to separate the cellulase components by eluting with a pH gradient, or a salt gradient, or both a pH and a salt gradient. As used herein, the term "cellulase composition substantially free of ...