Horses have 64 chromosomes, and donkeys have 62. Amos says the baby could be a mule (with 63 chromosomes), a donkey (with 62 chromosomes) or a chimera — an animal that has genetic material from different species.
How many chromosomes do mules have in their gametes?
The horse has 64 chromosomes (32 pairs), and the donkey has 62 (31 pairs). When they are mated, the mule receives 63 chromosomes (32 from the horse and 31 from the donkey). During meiosis, the chromosomes are not in pairs, and, as their number is halved, the sex cells usually end up without a complete set.
Can a mule have a foal?
The foal is being called a miracle because mules aren’t supposed to give birth. … A mule inherits 63. An even number of chromosomes is needed to divide into pairs and reproduce.
What is a female mule called?
Sex: Male is a ‘horse mule’ (also known as a ‘john’ or ‘jack’). Female is a ‘mare mule‘ (also known as a ‘molly’). Young: A ‘colt’ (male) or ‘filly’ (female).
Why do horses mate with donkeys?
Horses and donkeys mate to produce mules, which are sterile (most of the time – there are occasional exceptions), so they do not violate that particular species definition.
Are hinnies sterile?
Most hinnies (female donkey×male horse) and mules (female horse×male donkey) are sterile with few reports of equine fertile hybrids. The main cause of this sterility is thought to be a meiotic block to spermatogenesis and oogenesis.