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The mule is a domestic equine hybrid between a donkey and a horse.It is the offspring of a male donkey (a jack) and a female horse (a mare). [1] [2] The horse and the donkey are different species, with different numbers of chromosomes; of the two possible first-generation hybrids between them, the mule is easier to obtain and more common than the hinny, which is the offspring of a male horse ...
This process is known as a rotational birth, and while it is not a process unique to humans, humans are unique in that nearly all human babies undergo this process out of necessity. A primary hypothesis for why this process and others occur, causing human births to be drastically more difficult than other mammals is known as the obstetrical ...
Recombination between non-sister chromosomes at meiosis is known to be a recombinational repair process that can repair double-strand breaks and other types of double-strand damage. [2] In contrast, recombination between sister chromosomes cannot repair double-strand damages arising prior to the replication which produced them.
A video of meiosis I in a crane fly spermatocyte, played back at 120× the recorded speed. Meiosis (/ m aɪ ˈ oʊ s ɪ s / ⓘ; from Ancient Greek μείωσις (meíōsis) 'lessening', (since it is a reductional division) [1] [2] is a special type of cell division of germ cells in sexually-reproducing organisms that produces the gametes, the ...
The ability to undergo meiosis is widespread among arthropods including both those that reproduce sexually and those that reproduce parthenogenetically. [31] Although meiosis is a major characteristic of arthropods, understanding of its fundamental adaptive benefit has long been regarded as an unresolved problem, [ 32 ] that appears to have ...
How Ring-Tailed Lemurs Reproduce The females usually have only one baby per year, although they sometimes give birth to twins. Newborns stick close to their moms for the first few months and are ...
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Kylie Kelce kicked off her podcast Not Gonna Lie talking about her ill-fitting pants. “This week I had to officially switch to maternity jeans because the hair tie holding my pant button ...