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  2. List of mammalian gestation durations - Wikipedia

    en.wikipedia.org/wiki/List_of_mammalian...

    There is a positive relationship between mass at birth and length of gestation in eutherian mammals. [17] Larger mammals are more likely to produce a well-developed neonate than small mammals. Large mammals develop at an absolute slower rate compared to small mammals.

  3. Canine reproduction - Wikipedia

    en.wikipedia.org/wiki/Canine_reproduction

    In domestic dogs, sexual maturity occurs between the ages of 6 and 12 months for both males and females, although this can be delayed until up to two years of age for some large breeds. [2] Pregnancy is possible as soon as the first estrus cycle , but breeding is not recommended prior to the second cycle. [ 3 ]

  4. Relationship between telomeres and longevity - Wikipedia

    en.wikipedia.org/wiki/Relationship_between...

    Extending telomeres can allow cells to divide more and increase the risk of uncontrolled cell growth and cancer development. [24] A study conducted by Johns Hopkins University challenged the idea that long telomeres prevent aging. Rather than protecting cells from aging, long telomeres help cells with age-related mutations last longer. [13]

  5. Pregnancy (mammals) - Wikipedia

    en.wikipedia.org/wiki/Pregnancy_(mammals)

    For example, a cat's gestation normally takes 58–65 days while an elephant's takes nearly 2 years (21 months). [3] However, growth does not necessarily determine the length of gestation for all species, especially for those with a breeding season. Species that use a breeding season usually give birth during a specific time of year when food ...

  6. Telomerase - Wikipedia

    en.wikipedia.org/wiki/Telomerase

    Cells may reduce their telomere length by only 50-252 base pairs per cell division, which can lead to a long lag phase. [ 59 ] [ 60 ] A telomerase activator TA-65 is commercially available and is claimed to delay aging and to provide relief from certain disease conditions.

  7. Telomere - Wikipedia

    en.wikipedia.org/wiki/Telomere

    Telomere length varies greatly between species, from approximately 300 base pairs in yeast [24] to many kilobases in humans, and usually is composed of arrays of guanine-rich, six- to eight-base-pair-long repeats. Eukaryotic telomeres normally terminate with 3′ single-stranded-DNA overhang ranging from 75 to 300 bases, which is essential for ...

  8. How long do dogs live? We checked with a vet - AOL

    www.aol.com/long-dogs-live-checked-vet-080000777...

    This collar has a long-lasting formula that protects dogs and puppies from fleas and ticks for up to eight months. It starts working within 24 hours to offer fast relief to your pooch. View Deal

  9. Cellular senescence - Wikipedia

    en.wikipedia.org/wiki/Cellular_senescence

    As the cell divides, the telomeres on the end of a linear chromosome get shorter. The telomeres will eventually no longer be present on the chromosome. This end stage is the concept that links the deterioration of telomeres to aging. Top: Primary mouse embryonic fibroblast cells (MEFs) before senescence. Spindle-shaped.