Mitosis consists of four phases - prophase, metaphase, anaphase, telophase and cytokinesis.1. Prophase: Chromatin in the nucleus condenses and chromosomes pair up. Mitosis consists of four phases - prophase, metaphase, anaphase, telophase and cytokinesis
1. Prophase: Chromatin in the nucleus condenses and chromosomes pair up
2. Metaphase: Chromosomes line up at the center of the cell. The sister chromatids are joined together.
3. Anaphase: The sister chromatids separate from each other to the opposite sides of the cells.
4. Telophase and Cytokinesis: Membrane forms around each set of chromosomes on two opposite sides of the cells and cell divides into two identical daughter cells.
Therefore, chromatids are present in metaphase and anaphase. In prophase structures are called chromonema.
A. understatement.
B. pun.
C. paradox.
D. epigram.
The functional unit of the kidney that filters blood and forms urine is the Nephron.
Nephron, a functional component of the kidney, is the organ responsible for producing urine as waste and extra chemicals are eliminated from the circulation.
The kidneys (pronephros) of early vertebrate embryos, amphibian larvae, and primordial fish have the most basic nephrons. Only somewhat more advanced in structure are the nephrons present in the kidneys (mesonephros) of frogs, most fish, and more advanced vertebrates during late embryonic development.
The adult kidneys, or metanephros, of land vertebrates like reptiles, birds, and mammals have the most developed nephrons.
Therefore, The functional unit of the kidney that filters blood and forms urine is the Nephron.
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The nephron is the functional unit of the kidney. It filters blood and forms urine through a process involving the renal corpuscle and the renal tubule.
The functional unit of the kidney that filters blood and forms urine is the nephron. Kidneys contain millions of these tiny structures, and each nephron consists of two main parts: the renal corpuscle and the renal tubule. Blood enters the kidney through the renal artery, which splits to form a vast network of tiny capillaries. These capillaries form a tuft inside a cup-like structure known as the Bowman's capsule, which is a part of the renal corpuscle. The blood gets filtered here, and the filtrate moves into the renal tubule, where essential nutrients are reabsorbed, and wastes and excess water are concentrated into urine to be excreted.
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Although many cells go through both anaphase A and B motions, occasionally one motion takes precedence over the other. Poleward migration in anaphase requires the separation of the paired sister chromatids. The components that link the chromatids at the centromere are degraded by proteolysis, which causes chromatid separation.
Synapsis is the name given to this action. Crossing over happens during synapsis. DNA is transferred between two nonsister chromatids of a homologous pair of chromosomes during crossing over.
When nondisjunction occurs, the homologous or sister chromatids are drawn to one pole of the cell because the separation does not take place.
Therefore, One daughter cell would have more chromosomes than usual, and one sister chromatid would not split equally during the anaphase of mitosis.
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b. lancelet
c. sea star
d. sand dollar
The study of animals is called zoology.
The correct answer to the question is option B which is lancelet.
A group of classes is called phylum which helps to classify the species having the same characteristics.
According to the question, lancelets belong to the chordate while others were the example of Echinodermata.
Hence, the correct answer to the question is option B.
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