What are the characteristics of boys and girls?
Having a boy or girl is a very mysterious topic that is of great concern to many people. According to scientific research, human beings do have some innate characteristics when they are born boys and girls. Next, we will discuss the characteristics of boys and girls from four aspects: gender genes, body shape, personality characteristics and physiological life cycle.
Gender gene
The first aspect is gender genes. Human gender is controlled by two genes: X and Y. Each father and mother will pass on a sex gene (X or Y) to their children. Men have XY chromosomes and women have XX chromosomes. Therefore, at the beginning of the fertilized egg\’s division, if the fertilized egg obtains the Y chromosome from the father, it will develop into a male, and if it does not have a Y chromosome, it will develop into a female.
In addition, research shows that a male or female\’s characteristics in certain genes also affect the probability of having a boy or a girl. For example, on the X chromosome, female genes are generally stronger than male genes, so women are more likely to give birth to a boy after conception. The male mother\’s genes play a more important role in controlling the gender of her children. When a male mother is generally rich in X chromosomes, her children will be more likely to be female.
Body shape
The second aspect is body shape. The body shapes of men and women are easy to distinguish. Men’s bodies are thicker, with broad shoulders and chest, while women’s bodies are slender and graceful, with more attractive body curves. According to research, this body shape is related to gender gene control. Male genes control the growth and development of bones and muscles, so males gradually develop into a tall and stout person. But women\’s genes tend to make their bodies gradually become more graceful and slender.
In addition, two hormones, estrogen and testosterone, also affect body shape. Estrogen gives women more curves, such as bigger hips and breasts, while testosterone makes men more muscular. Therefore, a mother with higher estrogen levels may give birth to a daughter rather than a son, while a father with higher testosterone levels may have a higher probability of giving birth to a boy.
Characteristics
The third aspect is personality characteristics. There are also some distinct differences in personality between men and women. Men are generally more outgoing, confident, and practical, while women are more introverted, compassionate, and emotionally expressive. This personality difference is related to gender genes and hormones. Androgens in men can inhibit hormonal responses, helping men stay calm in stressful situations and respond more quickly to \”fight or flight\”; estrogen in women can make women more vulnerable Reasoning, more sensitive.
Physiological life cycle
The fourth aspect is the physiological life cycle. Males and females have different characteristics during different physiological life cycles. For example, during puberty, a male\’s physical signs undergo many changes, and the amount and type of hormones begin to increase. This may lead to more extroverted behavior and greater impulsivity in young men. And during the \”premenstrual syndrome\” cycle before menstruation, women often experience symptoms that interfere with their physical and emotional state.
In general,Although there are many mysterious components to being born a boy or a girl, based on scientific research, grasping the laws of gender genes, body shape, personality characteristics, and physiological life cycles are still very instructive for people to understand the characteristics of having a boy and a girl. .
