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According to the CIA World Factbook, the total world population is 7,095,217,980 (July 2013 estimate). The ratio is 1.01 males to every 1.0 female. Total female estimate as of July 2013 is 3,523,843,881.
X and Y are the human sex chromosomes. Normal females have XX, normal males have XY. In humans, it is the presence of a Y chromosome that makes a person male, not the ratio to or number of X chromosomes. (Therefore a person with XXY would be male).
For the same reason that anyone of any gender thinks they are smarter: They simply don't know any better. You will find both males and females with highly inflated egos that are simply not justified by their actual intelligence level. If you are referring to the perception that more females show this tendency it may simply be due to societal pressures. Males have a tendancy to be bullied or beaten up slightly more frequently than females. So overall you end up with slightly more females who are not "put in their place" and thus show a higher level of ego in public. In actual studies however the ratio of intelligence has been shown to be fairly equally distributed among both genders. Which conversely means the number of stupid people is also equally distributed among both genders. So, any apparent bias of one gender over the other is simply not based on reality, it is based entirely on societal fluctuation and mating rituals. For example: Male says something stupid: everyone in the room laughs at him and/or corrects him. Female says something stupid: half the room will not correct her in the hopes of having sex with the dumb girl who now continues to believe she is smarter than she is.
slowing of metabolism, wrinkles, diminished eye sight
Not all forms of color blindness are hereditary. There are three distinct types of hereditary color blindness, each with different frequencies in the human population, and with distinct genetic causes. Red-green color blindness is more common among males than females, but blue-yellow color blindness is not. Talking about color blindness in general, there is no reliable ratio of male-to-female prevalence.
what is the ratio of females to males in the house of representatives
96 males to 100 females.
The ratio of males to females in the medical field was about 10 females to every 13 males in the 1970s. The CDC has estimated that this ratio has become almost balanced as of 2010.
2:1
Sex ratio is ratio of males to females in a population.
Pericarditis is more common in males than females with a ratio of seven to three
The 2014 estimate is 1.0054 males per female.
1:25
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The decimal fraction for males, in the total, is 0.65
During the mating season Amphibians males out number the females by 10 to 1
Sex ratio denotes the ratio of males to females in a population. The primary sex ratio is the ratio at the time of conception, secondary sex ratio is the ratio at time of birth, and tertiary sex ratio is the ratio of adult human beings. According to CIA estimates the current world sex ratio at birth is 107 boys to 100 girls. In 2010 the global sex ratio was 986 females to 1000 males, which got further reduced to 984 females to 1000 males in 2011.