Why Can't Mules Have Babies?
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Hybrid animals are infertile because of the way their sex cells form. But sometimes, life finds a way.
FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some handy keywords to get your googling started:
- Hybrid organisms: The offspring of two animals or plants of different breeds, varieties, species or genera.
- Mitosis: A process of cell division that produces copies of the original cell.
- Meiosis: A process of cell dividion that produces new daughter cells with half the chromosome number of the original cell.
- Sex cell, or gamete: a cell that fuses with another cell during fertilization (conception) in organisms that sexually reproduce.
- Hemiclonal transmission: The rare occurence in which only maternal DNA gets passed along during the creation of sex cells.
Species featured in this video:
- Mule, is the offspring of a male donkey (jack) and a female horse (mare)
- Liger, is a hybrid cross between a male lion (Panthera leo) and a female tiger (Panthera tigris)
- Zonkey, is the offspring of a zebra and a donkey. Zebra hybrids are generally known as zebroids
- Beefalo, also known as cattalo, is the offspring of a domestic cattle (Bos taurus) and an American buffalo (Bison bison)
- Cama, is the offspring of a male dromedary camel and a female llama.
___________________________________________
Credits (and Twitter handles):
Script Writer: David Goldenberg (@dgoldenberg)
Script Editor: Emily Elert (@eelert)
Video Illustrator: Chad Geran
Video Director: Emily Elert (@eelert)
Video Narrator: Emily Elert (@eelert)
With Contributions From: Henry Reich, Alex Reich, Kate Yoshida, Ever Salazar, Omkar Bhagat, Peter Reich, Rachel Becker
Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder
Image Credits: Liger Hercules - Ed Quinn
https://goo.gl/A8zgxO
Zonkey - Flickr user Leogirly4life
https://goo.gl/QAcza0
Cama - TaylorLlamas.com
http://goo.gl/YCY3Zd
Beefalo - Noah's Ark Animal
Sanctuary
http://www.noahs-ark.org/
_________________________________________
Like our videos?
Subscribe to MinuteEarth on YouTube: http://goo.gl/EpIDGd
Get early, exclusive access to our videos on Vessel: https://goo.gl/hgD1iJ
Support us on Patreon: https://goo.gl/ZVgLQZ
Also, say hello on:
Facebook: http://goo.gl/FpAvo6
Twitter: http://goo.gl/Y1aWVC
And find us on itunes: https://goo.gl/sfwS6n
___________________________________________
If you liked this week’s video, we think you might also like these things:
The Blitzkreiglr YouTube guys play the game Hybrid Animals: https://www.youtube.com/watch?v=g9WS5cd_59I
___________________________________________
References:
Ryder, O., Chemnick, L., Bowling, A., Benirschke, K. (1985). Male mule foal qualifies as the offspring of a female mule and Jack donkey. Journal of Heredity 76 (379-381). Retrieved from http://jhered.oxfordjournals.org/content/76/5/379
C.J. Zhao, Y.H. Qin, X.H. Lee, Ch. Wu (2006). Molecular and cytogenetic paternity testing of a male offspring of a hinny. Journal of Animal Breeding and Genetics,123: 403-405. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/17177697
Bucholz (2013). Colorado miracle mule foal lived short life, but was well-loved.The Denver Post. Retrieved from http://www.denverpost.com/2013/08/16/colorado-miracle-mule-foal-lived-short-life-but-was-well-loved/
Millon, L. (2016). Personal Communication.
Antczak, D. (2016). Personal Communication.
Видео Why Can't Mules Have Babies? канала MinuteEarth
Hybrid animals are infertile because of the way their sex cells form. But sometimes, life finds a way.
FYI: We try to leave jargon out of our videos, but if you want to learn more about this topic, here are some handy keywords to get your googling started:
- Hybrid organisms: The offspring of two animals or plants of different breeds, varieties, species or genera.
- Mitosis: A process of cell division that produces copies of the original cell.
- Meiosis: A process of cell dividion that produces new daughter cells with half the chromosome number of the original cell.
- Sex cell, or gamete: a cell that fuses with another cell during fertilization (conception) in organisms that sexually reproduce.
- Hemiclonal transmission: The rare occurence in which only maternal DNA gets passed along during the creation of sex cells.
Species featured in this video:
- Mule, is the offspring of a male donkey (jack) and a female horse (mare)
- Liger, is a hybrid cross between a male lion (Panthera leo) and a female tiger (Panthera tigris)
- Zonkey, is the offspring of a zebra and a donkey. Zebra hybrids are generally known as zebroids
- Beefalo, also known as cattalo, is the offspring of a domestic cattle (Bos taurus) and an American buffalo (Bison bison)
- Cama, is the offspring of a male dromedary camel and a female llama.
___________________________________________
Credits (and Twitter handles):
Script Writer: David Goldenberg (@dgoldenberg)
Script Editor: Emily Elert (@eelert)
Video Illustrator: Chad Geran
Video Director: Emily Elert (@eelert)
Video Narrator: Emily Elert (@eelert)
With Contributions From: Henry Reich, Alex Reich, Kate Yoshida, Ever Salazar, Omkar Bhagat, Peter Reich, Rachel Becker
Music by: Nathaniel Schroeder: http://www.soundcloud.com/drschroeder
Image Credits: Liger Hercules - Ed Quinn
https://goo.gl/A8zgxO
Zonkey - Flickr user Leogirly4life
https://goo.gl/QAcza0
Cama - TaylorLlamas.com
http://goo.gl/YCY3Zd
Beefalo - Noah's Ark Animal
Sanctuary
http://www.noahs-ark.org/
_________________________________________
Like our videos?
Subscribe to MinuteEarth on YouTube: http://goo.gl/EpIDGd
Get early, exclusive access to our videos on Vessel: https://goo.gl/hgD1iJ
Support us on Patreon: https://goo.gl/ZVgLQZ
Also, say hello on:
Facebook: http://goo.gl/FpAvo6
Twitter: http://goo.gl/Y1aWVC
And find us on itunes: https://goo.gl/sfwS6n
___________________________________________
If you liked this week’s video, we think you might also like these things:
The Blitzkreiglr YouTube guys play the game Hybrid Animals: https://www.youtube.com/watch?v=g9WS5cd_59I
___________________________________________
References:
Ryder, O., Chemnick, L., Bowling, A., Benirschke, K. (1985). Male mule foal qualifies as the offspring of a female mule and Jack donkey. Journal of Heredity 76 (379-381). Retrieved from http://jhered.oxfordjournals.org/content/76/5/379
C.J. Zhao, Y.H. Qin, X.H. Lee, Ch. Wu (2006). Molecular and cytogenetic paternity testing of a male offspring of a hinny. Journal of Animal Breeding and Genetics,123: 403-405. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/17177697
Bucholz (2013). Colorado miracle mule foal lived short life, but was well-loved.The Denver Post. Retrieved from http://www.denverpost.com/2013/08/16/colorado-miracle-mule-foal-lived-short-life-but-was-well-loved/
Millon, L. (2016). Personal Communication.
Antczak, D. (2016). Personal Communication.
Видео Why Can't Mules Have Babies? канала MinuteEarth
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