How Many Chromosomes Do Dogs Have – Facts You Might Don’t Know


Chromosomes contain the genetic material DNA in helical structures. Each species has a constant chromosome number. Although you can’t identify a species based on its chromosome numbers, knowledge about them can help you learn more about the organism. Genetic studies have shown that coyotes, dingoes, jackals, and nearly all other wolf species have the same number as dogs. This means that all the species above can interbreed. The domestic dog is one of the most varied terrestrial animals (in physical appearance), with nearly 400 breeds. How diverse are their genes? What number of chromosomes does each furry friend have? Let’s take a look on how many chromosomes do dogs havethem in more detail below.

What is a Chromosome

The DNA molecules store in the cell’s nucleus into thread-like structures known as chromosomes. Each chromosome compose of DNA tightly wrapped around proteins called histones. When the cell isn’t dividing, chromosomes are not visible inside the nucleus of the cell.

The DNA that makes up the chromosomes is more tightly pack when cells divide and can see under a microscope. The majority of the information scientists know about chromosomes came from studying chromosomes as they divide during cell division. Each chromosome contains a constriction point called the centromere. This divides the cell into two sections or “arms” and gives each chromosome its distinctive shape. It can also use to describe specific genes.

What is DNA

DNA stands for deoxyribonucleic acids. Your DNA is your genetic code and genome. It is compose of two strands. These strands form a pair and are link by hydrogen bonds. The DNA ladder is often use for refering to the way DNA is link together. Your genome contains your genetic instructions. Every single genome that a human or species has contains all of the information needed to create the organism. The genome is then transform into a human or another species. Although this sounds complicated in scientific terms, it is easy to understand once broken down.

To be alive, we need DNA. Your genome is made up of DNA. Your genome is composed of billions upon billions of DNA strands, which then form chromosomes. These are all necessary for life to exist. It is incredible to consider how small all these aspects are. Now that you have a basic understanding, next, we will be discussing dog DNA in particular. This article will focus on chromosomes, but you must have a general understanding of the DNA of dogs to fully understand them.

How many chromosomes do dogs have

As you might have guessed, each animal and every species has a certain number of chromosomes. This includes plants. Each species has its own unique set of numbers and the way that DNA is formed. This is why there is a difference between all species. While 46 chromosomes make up the majority of human beings, this is not true for dogs.

Dogs have a staggering total of 78 genes, which is significantly higher than the human population. There are 38 pairs of autosomes total for dogs. Autosomes consider non-sex chromosomes. These autosomes make up 76 chromosomes. Dogs have two sex chromosomes, X and Y, which is different from humans. These chromosomes bring the total number of chromosomes to 78.

Dogs receive half their chromosomes directly from their mother and a half from their father. Your chromosomes also contain DNA. But a dog’s DNA is different than a human’s. There are many more pairs, and their overall makeup is very different.

Learn more: How hot is too hot for dogs

how many chromosomes do dogs have

Structure of the dog chromosomes 

The diploid chromosome number mentioned was found in male and female dogs. Dogs have two sex chromosomes. They are the X and Y, just like humans. Female sex cells have two X chromosomes, while male sex cells contain one X chromosome and one Y chromosome.

  • Concerning structure, autosomes chromosomes are found in the somatic cellsCentromeres are found in various tissues, including lungs.
  • Although the details of the chromosome arm’s nature are still unknown, Japanese scientists have discovered that dogs’ most extensive chromosome pairing can be considered the largest among autosomes.
  • Just like humans, the X-chromosome in dogs is the largest and its complement the smallest.

Importance of dog chromosome number

Dog hybrids It is crucial to know the chromosome numbers of different animals to make successful crosses. Use it as a basis for hybridization between the same species. This is often done in dogs to create “pure-breed” and “hybrid.”

  • It is important to remember that the number of chromosomes does not necessarily determine this capability.
  • Other factors, such as the size and shape of chromosomes and the presence of lethal genes, should be taken into consideration.

Chromosomes and Breeding 

Did you know that breeding can affect by the number of chromosomes in your dog’s DNA? All dogs have the same number of chromosomes. However, this is something that should consider when breeding dogs. Dogs have the same number of chromosomes as humans, but each breed will have a different genetic makeup.

These genetic differences are crucial when it comes down to breeding. If you cross two breeds of the same breed, you’ll get a purebred. However, you can breed two different breeds together to create a hybrid breed. This is commonly call a mix or crossbreed. When breeding dogs, it is essential to consider their genetic makeup to make sure they are not from the same family. Inbreeding can pose a severe problem for both the dog and the puppies. Inbreeding can lead to blindness and cancer in puppies.

How many Chromosomes do dogs have in a Sperm Cell? 

A dog’s sperm cells contain 39 and a dog’s egg cell 39 chromosomes. They total 78 chromosomes when combined.


We hope this article explains more about your dog’s DNA and chromosomes. Although it can be challenging to grasp all the scientific explanations, understanding your dog’s DNA is fascinating. You can see that dogs are very different from humans when it comes to their DNA and chromosomes. Although every living creature is born with chromosomes, their DNA is unique to each one. These differences are what help differentiate species. There are 78 individual chromosomes in dogs, which makes up 39 pairs. This is quite a difference to humans, who have only 46 individual chromosomes. Many companies offer DNA testing for dogs.

Leave a Reply

Your email address will not be published. Required fields are marked *

3 + 18 =