求知渴望，没有答案不甘心

“儿子像妈， 女儿像爹”？  答案来了， Yes and No:

Y-chromosomes have fewer genes than X-chromosomes and some of them are responsible for the development of male genitals. This is why a boy is more likely to look like his mother. When it comes to girls, they receive X-chromosomes from both parents, so it's impossible to predict what they will look like.

所有跟帖： 

• 很好科学和经验的相互验证。来来，我也来科学严谨一把。 -路过2013- ♀ (314 bytes) () 12/21/2022 postreply 04:53:44

• 你们两一大早就搞这些烧脑的。我友情点赞！ -DD2020- ♀ (0 bytes) () 12/21/2022 postreply 05:00:00

• 我是昨晚发动的。你和路过才早。 -LexusOnly- ♂ (33 bytes) () 12/21/2022 postreply 05:18:18

• 早上起来送儿子上学呀！（你夜猫子呀！那么晚还发帖） -DD2020- ♀ (0 bytes) () 12/21/2022 postreply 05:22:00

• 过节。。。。白天，黑夜没区别 -LexusOnly- ♂ (0 bytes) () 12/21/2022 postreply 06:59:38

• 我儿子头发和头型，嘴巴，翘屁股都是像爸爸。他爸自然卷，撅嘴。 -大王叫我来巡山00- ♀ (0 bytes) () 12/21/2022 postreply 05:34:29

• 像路过说的，只是大概率上，儿子可能随妈 -LexusOnly- ♂ (0 bytes) () 12/21/2022 postreply 07:03:55