"Echoing Genesis 1:27 and 2:24, Jesus said, “From the beginning of the creation, God ‘made them male and female.’ ‘For this reason a man shall...be joined to his wife, and the two shall become one flesh.’” Mark 10:6-8
Genetically, except for enucleated (cells without a nucleus) blood cells, every human body cell is either male (XY chromosomes) or female (XX chromosomes).
All healthy humans begin life with sex chromosomal differences: the Y contains over 200 genes, of which 72 code for proteins, while the X contains over 12 times as many, fully 874 genes.
After a zygote (a fertilized egg) is formed, thousands of genetic differences are created due to an epigenetic process called imprinting. This system turns off a wide variety of genes in males and a wide variety of other genes in females depending on whether the gene came from the father or the mother. The result is that many genetic differences exist between the sexes well before birth.
Adult males and females also have different physiological reactions to alcohol due to variations in alcohol dehydrogenase—a detoxifying enzyme. Alcohol dehydrogenase breaks down ethanol, and as a result females exhibit higher alcohol metabolic rates than males. In other words, liquor tends to have a stronger effect on women.
Having males and females perform some mental activity, such as reading a paragraph or looking at a picture, often shows significant differences in their brain scans.
Even sleep cycles tend to be different. Females tend to go to sleep earlier, wake up earlier, and are more active in the morning than males. This fact has an adverse effect on boys and is one of several reasons for their poorer school performance compared to girls from first grade through college.
Genetic and other research continue to find evidence of built-in differences in males and females, confirming the biblical record about the implications of God separately creating human males and females for slightly different, but compatible, roles. Together, they reflect His image." ICR
Genetically, except for enucleated (cells without a nucleus) blood cells, every human body cell is either male (XY chromosomes) or female (XX chromosomes).
All healthy humans begin life with sex chromosomal differences: the Y contains over 200 genes, of which 72 code for proteins, while the X contains over 12 times as many, fully 874 genes.
After a zygote (a fertilized egg) is formed, thousands of genetic differences are created due to an epigenetic process called imprinting. This system turns off a wide variety of genes in males and a wide variety of other genes in females depending on whether the gene came from the father or the mother. The result is that many genetic differences exist between the sexes well before birth.
Adult males and females also have different physiological reactions to alcohol due to variations in alcohol dehydrogenase—a detoxifying enzyme. Alcohol dehydrogenase breaks down ethanol, and as a result females exhibit higher alcohol metabolic rates than males. In other words, liquor tends to have a stronger effect on women.
Having males and females perform some mental activity, such as reading a paragraph or looking at a picture, often shows significant differences in their brain scans.
Even sleep cycles tend to be different. Females tend to go to sleep earlier, wake up earlier, and are more active in the morning than males. This fact has an adverse effect on boys and is one of several reasons for their poorer school performance compared to girls from first grade through college.
Genetic and other research continue to find evidence of built-in differences in males and females, confirming the biblical record about the implications of God separately creating human males and females for slightly different, but compatible, roles. Together, they reflect His image." ICR