If we had to nitpick, adding a pair of glasses would make it even more convincing.
"Sisi, tell Grandma quickly, how did you do that?"
As Grandma Huo spoke, she held Jiang Si's little hand and looked at it over and over again.
These are all hands, how come my granddaughter-in-law is so amazing!
"Grandma, it's actually quite simple once you thoroughly understand the genetics curriculum."
Grandma Huo looked at me with disbelief, "What's the use of thoroughly understanding it? If you can't apply it flexibly, it's just dead knowledge."
Jiang Si nodded, that was absolutely true.
She smiled and explained it to everyone in the simplest and most understandable way.
Simply put, the facial features of a person are mainly divided into visible and invisible features.
Features like interpupillary distance, nasal root height, jawline, ear shape, and mouth characteristics are mostly dominant genes.
To put it simply, these things are highly likely to be passed on to the next generation.
In addition, there is another very important point: in genetics, the "ugly gene" is actually more powerful.
So things like a flat nose, a bulbous nose, a bald mouth, a square face, and obesity.
There's no need to think about it; there's a more than 90% chance it will be passed on to the next generation.
Once the dominant features are identified, the three-point localization method—brow ridge, nasal ala, and mandible—is used.
Predicting what the next generation will look like is actually not difficult.
Of course, some external environmental factors also need to be considered in this process.
For example, during the Great Famine, people's height would generally shrink by 4-6 cm, and their head circumference would also shrink accordingly.
For example, the proportions of facial features differ between people from the North and South. Due to the colder weather in the North, people from the North tend to have higher and more prominent noses compared to people from the South.
Grandma Huo nodded repeatedly as she listened, never expecting there to be so many twists and turns involved.
Jiang Si smiled and said, "Besides appearance, height can also be passed on to the next generation through heredity. If the parents are this tall, the child is destined to be tall, and will not be shorter than 180 centimeters."
The speaker meant well, and the listener took it even more to heart.
Upon hearing this, both Mr. and Mrs. Huo turned to look at him.
Actually, when they saw those portraits earlier, they had a vague feeling that something was wrong.
Especially after listening to her daughter-in-law's explanation, her unease grew stronger.
"Si Si—"
Jiang Si has laid the groundwork for so long, so naturally she won't stop there.
She handed over the last portrait, which was also the fourth portrait.
"Mom and Dad, wasn't Auntie always regretting that she didn't get to see her child grow up?"
"This is a drawing I did, combining the facial features of the couple. You can take a look."
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