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The Southern red muntjac (M. muntjak) is the mammal with the lowest recorded chromosome number: The male has a diploid number of 7, the female only 6 chromosomes. Reeves's muntjac ( M. reevesi ), in comparison, has a diploid number of 46 chromosomes.
The medulla is the innermost layer of the hair shaft. This nearly invisible layer is the most soft and fragile, and serves as the pith or marrow of the hair. Some mammals don't have a medulla in their hair. The presence or absence of this layer and the characteristics of the medulla can aid taxonomists in identifying what taxa a hair comes from.
The hair follicle is an organ found in mammalian skin. [1] It resides in the dermal layer of the skin and is made up of 20 different cell types, each with distinct functions.. The hair follicle regulates hair growth via a complex interaction between hormones, neuropeptides, and immune cells
The best microscope photos of 2022 reveal a hidden world of dino-bone crystals, human tongue bacteria, and slime mold Morgan McFall-Johnsen October 11, 2022 at 10:00 AM
The female Southern red muntjac deer is the mammal with the lowest recorded diploid number of chromosomes, where 2n = 6. [15] The male has a diploid number of seven chromosomes. In comparison, the similar Reeves's muntjac ( M. reevesi ) has a diploid number of 46 chromosomes.
Diagram of the hair shaft, indicating medulla (innermost), cortex, and cuticle (exterior.) Anatomy of hair. The cortex of the hair shaft is located between the hair cuticle and medulla and is the thickest hair layer. It contains most of the hair's pigment, giving the hair its color. The major pigment in the cortex is melanin, which is also ...
Also, Reeves's muntjac escaped a zoo on Izu Ōshima in 1970 when a fence fell due to a typhoon. They have inflicted severe damage to the local ashitaba plantations. [22] A muntjac eradication effort on Izu Ōshima was undertaken in 2007–2014 but failed, and as of 2014, at least 11,000 individuals exist and have a yearly population growth rate ...
Northern Red Muntjac female, Muntiacus vaginalis in Khao Yai national park, Thailand This photo is published under the Creative Commons Attribution-Share-Alike Licence. You are free to use this image, as long as it is shared with attribution under the same licence together with the appropriate credits: