Can a timid hare and a rabbit cross successfully? What's the difference between the two?

Now as long as there is a female rabbit and a male rabbit in the countryside, dozens of closely related rabbits can be bred. So can a hare and a rabbit cross? What's the difference between the two? According to master Ying, a big rabbit farmer, there are 22 pairs of chromosomes in rabbits and 24 pairs in rabbits, with a difference of 2 pairs. Their genetic relationship is even lower than that of horses and donkeys (32 pairs of chromosomes in the former and 31 pairs in the latter). Which means they can't match! But in another sense, if the hare is released from the rabbit, then the mating between the hare and the rabbit is not considered crossbreeding, they just grow in different places, not different species, so it seems that the so-called hare and the rabbit can mate to produce the next generation.

Hare

Master Ying also revealed the difference between rabbits and hares:

1. Body type

Rabbits are larger, generally weighing more than 3.5 kilograms, up to 8 kilograms, while hares are relatively much smaller, weighing about 2.5 kilograms, with a maximum of 3.5 kilograms, with few hares weighing 4 kilograms.

2. Appearance

The ears of rabbits are shorter than those of rabbits, the ears of rabbits are longer, and the body of rabbits is larger than that of rabbits, but the forelimbs and tails of rabbits are longer. It is also convenient to escape in the wild! Rabbits are at the bottom of the food chain, and the wild environment is dangerous for them! So they need sharper hearing and more developed limbs! Rabbits don't even have it.

3. Chromosomes

There are 22 pairs of chromosomes in rabbits and 24 pairs in rabbits, with a difference of 2 pairs. Their genetic relationship is even lower than that of horses and donkeys (32 pairs of chromosomes in the former and 31 pairs in the latter). Which means they can't match!

4. Reproduction

After long-term breeding, domestication and cultivation, rabbits have become animals with high reproductive performance. The pregnancy period is 30 days, and they can give birth to 6-10 babies per month, because people try their best to cultivate more to make money! The hare gives birth to only one litter a year and gives birth to 480 cubs a year, which is completely different!

Rabbit

5. Characteristics of young rabbits.

The newborn bunnies of rabbits belong to late maturation. At birth, his whole body was naked and hairless, his eyes and ears were not open, he was basically unable to move and could not regulate his body temperature by himself. It takes about 15 days for the baby rabbit to open its eyes, and about 20 days for the baby rabbit to eat a small amount of alfalfa and go out with the female rabbit. The newborn rabbit babies of the hare, on the contrary, belong to precocious sex. They are born with hair all over the body, eyes can see and ears can hear. The hare can walk 3 days after birth and can eat by itself.

Attachment: chromosomes are polymers formed by deep compression of genetic material with genetic properties in cells, which are easily dyed dark by alkaline dyes, so they are called chromosomes (made up of chromatin). Chromosomes and chromatin are different morphological manifestations of the same substance during interphase and interphase of cell division. The chromosomes appear in the mitotic stage. Chromatin appears in interphase and is filamentous. It is essentially a combination of deoxyribonucleic acid (DNA) and protein (that is, nuclear protein). It is unevenly distributed in the nucleus and is the main carrier of genetic information (genes), but not the only carrier (such as mitochondria in the cytoplasm).