How many chromosomes does a whale have
The sperm whale (Physeter macrocephalus) is the largest toothed predator and the largest of the toothed whales. Along with the pygmy sperm whale and dwarf sperm whale of the genus Kogia, it is the only surviving member of the genus Physeter and one of three extant species of the sperm whale family.
The sperm whale is a pelagic animal that lives all over the world and migrates seasonally for feeding and breeding.
(5) Outside of the mating season, females and young males live in groups, while mature males (bulls) live alone. To protect and nurse their young, the females work together. Females have calves every four to twenty years and care for them for over a decade. While calves and weakened adults are sometimes killed by killer whale pods, mature sperm whales have few natural predators (orcas).
Males reach a length of 16 meters (52 feet) on average, but some can reach 20.7 meters (68 feet), with the head accounting for up to one-third of the animal’s total length. It is the third deepest diving animal, after the southern elephant seal and Cuvier’s beaked whale, with a depth of 2,250 meters (7,382 feet). [number six]  Sperm whales use underwater echolocation and vocalization that can exceed 230 decibels (re 1 Pa m). [eight] It has the world’s biggest brain, more than five times the size of a human’s. Sperm whales can live for up to 70 years. [nine] [nine] [nine]
Weird nature chromosome king
Traditional staining and multiple banding techniques were used to examine the mitotic and meiotic chromosomes of the semiaquatic rodent Ichthyomys pittieri (Rodentia, Cricetinae) from Venezuela. This unusual species’ diploid chromosome number is 2n = 92, which is the highest known among mammals. This extraordinarily high chromosome number is thought to be the result of repeated centric fissions. The karyotype of I. pittieri was compared to that of Anotomys leander, which has also been reported to have a diploid number of 2n = 92. Within the Neotropical Cricetidae, the karyological relationships are summarized.
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The results of a chromosomal study of the sperm whale using the method of leucocyte tissue culture are mentioned in this article. Fresh sterile blood was collected at sea from sperm, finback, and sei whales (Physeter catodon, Balaenoptera physalus, and B. borealis, respectively) during commercial whaling operations in July and August 1964 for various research purposes. One of us (R. P. A.) developed a blood collection system, which will be defined elsewhere.
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What is a chromosome?
The chromosome complex of the Dall’s porpoise, Phocoenoides dallii (True), a Delphinidae (Cetacea) species, was studied in male germ cells during spermatogenesis. In this species, the spermatogonia had 44 diploid chromosomes, while the primary and secondary spermatocytes had 22 haploid chromosomes. The standard XY-type chromosomes were discovered in this species. The X element is expressed by one of the medium-sized rod-type chromosomes with a globular body at its inner extremity, while the Y element is very small, measuring around one-third the size of the smallest autosome. The chromosome complement of this species is markedly distinguished by the prevalence of medium-sized elements with subterminal fibre attachments, according to morphological examination of the chromosomes. The chromosome constitution of this animal closely resembles that of the pig, according to a comparison of the chromosomes with those of similar mammals. On the basis of the karyological evidence presented here, the issue of the Cetacea’s phylogenetical affinity was addressed.