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Vor 5 Tagen · The largest difference between the opossum and non-marsupial mammals is the bifurcated penis of the male and bifurcated vagina of the female (the source of the term didelphimorph, from the Greek didelphys, meaning "double-wombed"). Opossum spermatozoa exhibit sperm-pairing, forming conjugate pairs in the epididymis.
28. Apr. 2024 · meerkat, ( Suricata suricatta ), burrowing member of the mongoose family (Herpestidae), found in southwestern Africa, that is unmistakably recognizable in its upright “sentinel” posture as it watches for predators. The meerkat is slender and has a pointed little face, tiny ears, and black eye patches. Body length is about 29 cm (11 inches ...
28. Apr. 2024 · Mammals. Series 1: 5. Heat. A look at how, from the barren Australian outback to the remote, dry deserts of Namibia, mammals use their ingenuity, incredible intelligence and remarkable resilience ...
9. Mai 2024 · Homo sapiens, the species to which all modern human beings belong and the only member of the genus Homo that is not extinct. The name ‘Homo sapiens’ was applied in 1758 by the father of modern biological classification, Carolus Linnaeus. The earliest fossils of the species date to about 315 thousand years ago.
Vor 5 Tagen · Plate from Henry Walter Bates (1862) illustrating Batesian mimicry between Dismorphia species (top row, third row) and various Ithomiini ( Nymphalidae, second row, bottom row) In evolutionary biology, mimicry is an evolved resemblance between an organism and another object, often an organism of another species.
Vor 5 Tagen · The novel object recognition (NOR) test is an animal behavior test that is primarily used to assess memory alterations in rodents. It is a simple behavioral test that is based on a rodents innate exploratory behavior. The test is divided into three phases: habituation, training/adaptation and test phase.
4. Mai 2024 · Mammalia, also called mammals, refers to all creatures that belong to the phylum Chordata. The species are classified as Vertebrata, which are among the most developed in the animal kingdom. There are over 5,000 species of live mammals in the world, which are split into three subclasses and nearly 26 orders.
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