When A Horse And A Donkey Mate They Produce Infertile Hybrids?

Mules are a hybrid of two species of ungulates-a female horse and a male donkey. They end up with an odd number of chromosomes which causes issues when egg or sperm cells are being produced. Thus all mules are sterile and cannot reproduce themselves.

When a horse and a donkey mate they produce a mule which is infertile This is an example of which of the following?

postzygotic isolating mechanism
Answer and Explanation: The type of isolation mechanism exemplified by a female horse that can mate with a male donkey but produce a mule that is sterile is a postzygotic isolating mechanism. This mechanism specifically prevents the formation of fertile offspring.

When a horse and a donkey mate they produce?

Hinny: The result of a horse stallion mating with a female donkey. Hinnies are less common than mules and there might be subtle differences in appearance. Size: Varies greatly depending on the stallion and mare. It can range from 91-172cm.

Can horse and donkey mate?

You’re right, a horse and a donkey can have babies together. A male horse and a female donkey have a hinny. A female horse and a male donkey have a mule. But hinnies and mules can’t have babies of their own.

When a horse mates with a donkey a hybrid called a mule is created a mule is not considered to be a species because?

Mules are known to be infertile, which means that they cannot be mated together to produce offspring. Fertility, or in other words the ability to produce new offspring, is the important criteria that helps in determining whether an organism is its own species or not. So the mule cannot be considered its own species.

Is a mule an example of hybrid infertility?

The mule is an example of an infertile hybrid. Even though horses and donkeys can mate and produce healthy offspring, those offspring cannot pass their genetic information down to future generations, so they are a genetic dead-end.

Is a mule an example of hybrid sterility?

For example, a mule is a hybrid between a female horse and a male donkey, could develop into an adult but fails to develop functional gametes, therefore, is sterile. Hence, Option (D) “Hybrid Sterility”.

Why can’t mules reproduce?

A horse has 64 chromosomes, and a donkey has 62. The mule ends up with 63. Mules can be either male or female, but, because of the odd number of chromosomes, they can’t reproduce.

Are mules and 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.

What kind of reproductive barrier exists between a horse and a donkey?

Gene flow between horses and donkeys is separated by a post-zygotic barrier called infertile offspring. As the name implies, post-zygotic barriers occur after the zygote (fertilized egg) has been formed. Therefore, donkeys and horses can successfully mate; however, their offspring are infertile.

Can a horse and a zebra mate?

A zorse is the offspring of a zebra stallion and a horse mare. This cross is also called a zebrose, zebrula, zebrule, or zebra mule. The rarer reverse pairing is sometimes called a hebra, horsebra, zebret, zebrinny, or zebra hinny. Like most other animal hybrids, the zorse is sterile.

Are mules sterile?

Befuddling Birth: The Case of the Mule’s Foal Mules — the offspring of female horses and male donkeys — are generally sterile and can’t reproduce.

What animals Can donkeys mate with?

In addition to other donkeys, they will breed with horses and zebras, producing hybrid offspring. A jack that mates with a female horse will produce an animal called a mule, while a jenny and a male horse produce a hinny, according to the University of Miami (opens in new tab).

What is hybrid sterility in biology?

Hybrid sterility is defined as the inhibition or suppression of the reproductive capacity of F1 or later generation hybrids between genetically different strains or populations, usually belonging to different species.

When a male donkey and a female horse breed the resulting offspring is what animal?

A donkey and a horse are able to mate and produce an offspring known as a mule. The resultant mule possesses 63 chromosomes in its cells due to the donkey parent having 62 chromosomes and the horse parent having 64.

Why are species hybrids such a mules often infertile?

In short, hybrid animals are infertile because they don’t have viable sex cells, meaning they can’t produce sperm or eggs. This is the case because the chromosomes from their different species parents don’t match up.

What animal hybrids are infertile?

Mules and bananas are examples of hybrids that are infertile, so they cannot have their own babies.

What is hybrid infertility an example of?

Hybrid sterility is the most common form of postzygotic reproductive isolation in plants. The best-known example is perhaps the hybrid sterility between indica and japonica subspecies of Asian cultivated rice (Oryza sativa L.).

Are there any hybrid animals that can reproduce?

Coyotes and wolves only diverged around 200,000 years ago, and the two species are still able to mate and produce viable offspring, known as a coywolf. Coywolf share many of the characteristics of their two parents, and are somewhere in between a coyote and a wolf in size when fully grown.

What causes hybrid animals to be sterile?

Because hybrid animals have parents from different species, the exchange of genetic information can cause many malfunctions in the chromosomes. This can result in the production of infertile sex cells and infertility.

What is a sterile hybrid called?

Mule: The Classic Sterile Hybrid. 4. Other Interesting Animal Hybrids. 5. Chimeras With Different Tissues.