Solution: This phase shows the Late prophase stage of cell division, where spindle fibers have become prominent and the chromosomes are arranging themselves towards the equator for the next phase.

Solution: Cell division and cell cycle are two separate processes that occur in your body. Cell division is the process of two daughter cells multiplying from a single parent cell. Eukaryotic cells...

Solution: Mitosis and Its Importance: Mitosis helps a single-cell zygote develop into a fully formed creature. It aids an organism's development.It aids in the healing of worn or injured tissues.It...

Solution: Following is the description of each of the given topics- a. Synaptonemal complex- It is made up of protein that is generated when two homologous chromosomes come together. The complex...

Solution: The difference between Mitosis and Meiosis are- MitosisMeiosis1. The prophase will be brief.1. Prophase I lasts a long time while prophase II lasts a short time.2. During metaphase, just...

Solution: Prophase I –LeptoteneThe nuclear membrane begins to dissolve at the leptotene stage.The chromatin material begins to condense.Centriole reaches the poles in opposite...

Solution: Chromosomes condense during prophase. The nuclear membrane breaks down. Organelles such as mitochondria, the endoplasmic reticulum, and the Golgi apparatus vanish. Golgi complexes,...

Solution: In the diplotene stage, the oocyte of mammalian females are arrested. The oocyte develops into a secondary follicle before being stopped at the diplotene stage. The first meiosis is...

Solution: When two haploid cells called gametes combine during fertilization, a diploid zygote is created. In the absence of meiosis, two diploid gametes are generated, resulting in the creation of...

Solution: During the S phase in animal cells the process of centriole duplication takes place in the cytoplasm, while DNA replication takes place in the nucleus.

Solution:  Tumor or cancer is a pathological condition caused by uncontrolled cell division and abnormal cell development. This is called malignancy caused due to cancer.

Solution: Amitosis occurs in prokaryotes, where the cell divides into two daughter cells. In multicellular creatures, however, normal cell division procedures are followed: first, karyokinesis, then...

Solution: (a) The spindle fibers would be unable to reach chromosomes if the nuclear membrane failed to dissolve. As a result, chromosomes would be unable to reach the cell's opposite poles. (b) If...

Solution: The following are the events and their phases. (a)Disintegration of nuclear membrane - Prophase. (b) Appearance of nucleolus -Telophase. (c) Division of centromere - Anaphase. (d) ...

Solution: The most possible reason for this phenomenon is mosaicism. Mosaicism refers to the coexistence of two populations of cells with different genotypes in a single person. Mosaicism can occur...

Solution: Extrachromosomal DNA is the DNA found in mitochondria and plastids. They are unaffected by nuclear DNA division in the nucleus. As a result, mitosis has no effect on extrachromosomal DNA.

Solution: Apart from forming spindles, centrioles also serve as the foundation for cilia and flagella. Microtubules and the sperm tail are also formed with their assistance. Centriole forms the...

Solution: During meiosis, a protein structure called the synaptonemal complex (SC) arises between homologous chromosomes (two pairs of sister chromatids) and is visible in the zygotene stage because...

Solution: It has been discovered that cardiac cells do not divide. Such cells do not divide further and exit the G1 phase of the cell cycle, entering the dormant G0 stage. So, the answers are the G1...

Solution: Interphase is the phase of the cycle that takes 23 hours out of 24 hours. It's important to note that during a human cell's 24-hour average cell cycle, cell division lasts only...

Solution: In this phase, DNA synthesis takes to occur. A cell must make a fresh copy of its chromosomes before it may divide. It takes both the replication of the lengthy DNA molecule in each...

Solution: One Pollen Mother Cell (PMC) produces four haploid pollen grains during meiosis. Thus, 1200/4=300 PMCs are required to produce 1200 pollen grains. 1 pollen mother cell →4 pollen grain....

Solution: Each cycle results in the formation of two daughter cells. The formula is (2 ^ number of cycles = number of daughter cells). Therefore, 2x=1024, which implies X=10. So, if we check...

Solution: In this situation, non-sister chromatids can cross over. Crossing over always takes place between two non-sister chromatids and never between two sister chromatids. Sister chromatids of...

Solution: To be recognized as a chromosome, there must be two identical sister chromatids linked at the centromere's center. So, when chromatids are attached to the centromere it is termed as a...

Solution: Human skin cells, hair follicles, and intestinal epithelial cells are constantly dividing, and hence stages of mitosis can be detected. So, the tissues near the cheeks can be taken to...

Solution: To create 32 cells, Escherichia coli cells must go through 5 division cycles, resulting in ${{2}^{5}}=32$ cells.  1→ 2 →4 →8 →16 →32 cells. Each cycle takes 20 minutes to...

Solution: To produce gametes, germ cells in the reproductive tract goes through a process called meiosis. Only the reproductive cells or germ cells (gametes) of the organism undergo meiosis,...

Solution: The cell is stained with Acetocarmine and mounted in acetocarmine alone and Giemsa to make the chromosomes visible.

Solution: The G1 phase is the longest in the cell cycle. It's the beginning of the interphase. The cell prepares for division during the G1 phase. During the G1 phase, cells are extremely...

Solution: Cell division in prokaryotic cells is faster than in eukaryotic cells. Human cells in culture demonstrate a typical eukaryotic cell cycle. These cells divide once every 24 hours on...

Solution: G 1 is the metabolically active stage of the cell cycle's interphase. The synthesis of ATP nucleotides, amino acids, RNAs, and proteins takes place during G 1, and the nucleus grows. In...

Solution: Meiosis is a type of cell division in which the number of chromosomes is cut in half, resulting in four haploid cells. DNA replication is followed by two rounds of cell division in...

Solution: The parent cell's replicated chromosomes condense and become thousands of times more compact during prophase than they were during interphase. These structures now look like X-shaped...

Solution: The parent cell's replicated chromosomes condense and become thousands of times more compact during prophase than they were during interphase. These structures now look like X-shaped...

Solution: Cells that do not divide further exit G 1 and enter the quiescent stage (G 0 ) of the cell cycle, which is an inactive state. Cells in this stage are still metabolically active, but they...

Solution: The two homologous chromosomes that have been duplicated join, produce a bivalent. Tetrad is another name for it, and it is created mostly during the pachytene stage of...

Solution: Mitosis is characterized by equal division since the number of chromosomes in the daughter cells remains the same as in the parent cell. Meiosis, on the other hand, is characterized by...

Solution: The fusion of two gametes, each with a complete haploid set of chromosomes, is required for sexual reproduction to produce offspring. These gametes are made up of specialized diploid cells...

Solution: Since chromosomes are separated in anaphase 1 and 2n from the parent becomes n in daughter cells, the genetic constitution of gametes is finally determined in the Anaphase 1 stage. So, the...

Solution: Meiosis is a cell division process that results in the halving of the number of chromosomes, resulting in the creation of gametes. In pachytene (prophase I, meiosis I), the crossing...