After broadcasting the ancient times live, I handed the system over to the state.

Why is inbreeding dangerous?

["If only one man and one woman remained in the world, could humanity continue to exist?"]

Zhu Qinggu was also somewhat thoughtful when she saw it. If it were before, she would have immediately thought of Adam and Eve, but now the theme of this video was about the dangers of inbreeding.

Adam and Eve had children, and then those children reproduced through inbreeding?

The probability of deformities would be so high that humanity would become extinct without even needing to continue.

She became interested and watched the video with great interest.

Inbreeding was recognized by the ancients long ago, which is why same-sex marriage was forbidden.

Marriage is something that concerns every ordinary person under the heavens, unlike the Xuanwu Gate Incident, which those people in the fields just watched for fun and laughed along with, without really understanding the intricacies involved.

"Even exceeding a woman's reproductive limits is not acceptable."

"According to the Guinness World Records, the woman who gave birth to the most children was from Russia. Between 1725 and 1765, she had 69 children, two of whom died in infancy."

"My goodness! She's even more fertile than our cat!" A woman looked at her cat, who had given birth to several kittens in one litter last time, and then had another one not long after.

She couldn't even get cats to take home.

"If only she, her husband, and these children are left in the world, then no matter how they reproduce, they will always be brothers and sisters. So pushing the limits won't work; the genes will always be the same."

"For example, the historically famous Habsburg dynasty was the family with the widest geographical reach in European history. Their rule spanned most of Europe, and from the 16th to the early 18th century, it seemed that Europe would essentially be ruled by the Habsburgs, but their fate ended there."

The last of these was King Charles II of Spain.

Portraits of Charles II and his ancestors appeared one after another on the sky.

The painter under the sky was somewhat interested in this painting technique.

But they soon noticed their identical, deformed, long chins, which were very ugly.

"The incidence rate of this disease in the general population is only about 2%, but in their family, almost everyone has it, which is all thanks to their work ethic."

"In that era, lineage was highly valued. To maintain the purity of their bloodline, royalty often chose to marry within their own families. Over two hundred years, there were eleven royal weddings, nine of which were between close relatives."

[“Charles II’s parents were uncle and nephew, his grandparents were uncle and nephew, and his great-grandparents were cousins. Not only were they related by marriage, but he also inherited a large chin and suffered from a hereditary disease from a young age.”]

["After finally reaching thirty, my body began to show signs of aging: severe edema, osteoporosis, muscle weakness, hunchback, hematuria, and a host of other age-related ailments. I died prematurely at thirty-eight."]

The ancients under the sky were once again shocked, and even felt a little nauseous.

These foreigners really have no ethics or morals; they'll date anyone, like uncles and nephews!

"It's an insult to elegance, it's an insult to elegance!"

"These foreigners are truly beyond redemption!"

However, many people also noticed that there was a pair of cousins ​​inside.

Are cousins ​​not allowed?

Empress Zhangsun thought of her eldest daughter, Li Lizhi, who had married her cousin, Zhangsun Chong. At this thought, her heart skipped a beat.

In ancient times, there were many cases of female cousins ​​marrying their male cousins. Is that not allowed?

"The death of Charles II marked the end of the Habsburg family line."

"Research suggests that human aversion and vigilance towards inbreeding is not so much an ethical or moral issue, but rather stems from intuition and instinct."

[Every time I read a novel or watch TV and see the Habsburg family, I want to laugh; their chins are so ugly.]

[Look at the royal family of island nations; they're the same. They've been inbred for generations, and they're quite ugly, especially with that signature squinty eye—it's practically a family tradition.]

Just like our fear of snakes and those smooth, legless creatures, our ancestors had a deep-seated fear of them because they knew these things could bite and were poisonous when hunting.

[Let's not talk about anything else, just take one family in our village. Almost the entire family practices consanguineous marriage. Now, the members are either mentally disabled, die young, or have other health problems.]

[Actually, close relatives are more likely to produce deformities, but they are also more likely to produce geniuses. However, the probability of producing deformities is much higher than the probability of producing geniuses. You can't gamble with human lives; it's too risky.]

[I have a distant relative, a husband and wife who are first cousins, and both of their children have mental disabilities. It's so difficult.]

[In ancient times, many people married close relatives; they felt that there were no taboos about cousins.]

……

The words spoken from above were increasingly causing panic among those below.

Especially those self-proclaimed noble families, who basically intermarry within their own families, no wonder there are always some deformed children, short-lived children, or children who cannot have children at all.

In this way, wouldn't their blood be filled with sin and evil?

And cousins ​​too? Do cousins ​​really know how to do that?

Traditionally, people believed that passing on bloodlines was a man's responsibility, so they did not think that girls could pass on bloodlines. Therefore, marriage between cousins ​​was also acceptable.

But now the sky has revealed this cruel truth.

This caused a great uproar in the hearts of the ancients.

……

"Our genes are inherited from our parents, half from our father and half from our mother."

[An image depicting genetic changes was also projected onto the sky.]

Especially those intersecting genes, which were considered very mysterious by the ancients.

"Many genetic diseases are caused by recessive genes, meaning that only one copy of the harmful gene is carried, which is usually masked. If both copies are carried, the disease will most likely become dominant. Since close relatives share highly similar genes, their offspring are more likely to inherit both copies of the harmful gene."

The images of genetic changes on the screen clearly demonstrate that a newborn embryo receives its genes from both its father and mother.

Although they didn't quite understand what genes were, they vaguely knew that genes were what determined what a person would look like from birth to adulthood.

And now parents can carry on their bloodline...

They dismissed the previous claim that only men could pass on their bloodline as utterly worthless.

In other words, children born to first cousins ​​could very well have a medical condition...

Empress Zhangsun sighed repeatedly, perhaps it was a good thing that Chang Le didn't have a child yet.