Verified by Toppr. In every somatic cell or example brain cell, the human diploid no. of chromosomes are present which means 23 pairs or 46 number of chromosomes. In gametes the chromosome number is haploid. So, the correct answer is 46 no. of chromosomes in a brain cell of humans. Was this answer helpful? In total, a human will have 23 pairs of chromosomes. This means that they have 46 chromosomes altogether. Chromosomes come in pairs, so no human or animal will normally have an odd number of chromosomes. For example, you can find four pairs of chromosomes in a fruit fly, and 12 in a rice plant
Human Y-chromosome variation and male dysfunction - PMC
Human chromosomes are the structures formed by the highest condensation state of the DNA molecules within a cell, which characterizes them as the cornerstone of The Global Structure of Chromosomes. Having discussed the DNA and protein molecules from which the nm chromatin fiber is made, we now turn to the organization of the chromosome on a more global scale. As a nm fiber, the typical human chromosome would still be cm in length and able to span the nucleus more than times Chromosomes of a human cell are organized into 23 pairs, and the two members of each pair are said to be homologues of one another (with the slight exception of the X and Y chromosomes; see below). Human sperm and eggs, which have only one homologous chromosome from each pair, are said to be haploid (1n)
Chromosome structure and numbers review (article) | Khan Academy
Genes are part of cell structures called chromosomes. In multicellular organisms, chromosomes are found in the nucleus of the cell. Each of these chromosomes contains one, long molecule of DNA, or d eoxyribo n ucleic a cid. A gene is a specific stretch of this DNA molecule. Each chromosome in the cell contains many genes Elephants boast a fascinating chromosome count that sets them apart. Unlike humans, who possess 23 pairs of chromosomes, elephants possess 26 pairs, resulting in a total of 52 chromosomes in each cell. To provide a comparison, other animals exhibit different chromosome counts. For example, dogs have 39 pairs, and horses A gamete produced by a female is called an egg, and the process that produces a mature egg is called oogenesis. Just one egg is produced from the four haploid cells that result from meiosis. The single egg is a very large cell, as you can see from the human egg also shown in Figure 5 Créez des applications natives ultra-rapides avec le langage moderne C++ pour Windows en utilisant des bibliothèques de conception visuelle avancées pour rapidement créer des expériences utilisateur exceptionnelles, augmenter la productivité et réduire les délais de mise sur le marché. Débutez un essai gratuit Voir les détails This is the fourth edition of an acclaimed introductory textbook on the structure and function of human chromosomes. The explosion of information on human genetic diseases has meant that there is a greater need than ever for students, practising physicians, laboratory technicians, and researchers to have a concise, up-to-date In he published his first paper on human chromosomes, showing the presence of a Y chromosome in male testicular preparations and a total count of 48 chromosomes For the next seven years he Successful architect Alexandra is overcome with joy after she and her partner secure a contract for a skyscraper in Valencia; however, a phone call from the police in the middle