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What are the sex-linked traits in humans and how do they differ between males and females?
Sex-linked traits in humans are genetic characteristics that are carried on the sex chromosomes, X and Y. In males, who have one X and one Y chromosome, sex-linked traits are typically passed down from the mother on the X chromosome. In females, who have two X chromosomes, sex-linked traits can be passed down from both parents. This means that males are more likely to exhibit sex-linked traits if they inherit a recessive gene on their X chromosome, while females need to inherit two recessive genes, one from each parent, to show the trait.
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Why do humans have nipples?
Humans have nipples because they develop in the womb before the sex of the baby is determined. Both males and females start with nipples, but only females use them for breastfeeding.
Do animals have prostates, and if so, how do they differ from those of humans?
Yes, animals do have prostates, but they can differ in size, shape, and location compared to those of humans. The function of the prostate in animals is similar to that in humans, which is to produce fluid that helps with reproduction.
How do animals sexually differ from humans?
Animals and humans differ in their sexual behaviors and reproductive systems. Animals typically have specific mating seasons and behaviors, while humans can engage in sexual activity at any time. Additionally, animals often have physical differences in their reproductive organs and mating rituals compared to humans.
How much DNa do humans share with fruit flies?
Humans and fruit flies share about 60% of their DNA sequences due to similarities in genetic makeup dating back to a common ancestor. However, the functions and organization of these shared genes can differ significantly between the two species.
What are the key differences between the menstrual cycle and the estrous cycle in female reproductive physiology?
The key difference between the menstrual cycle and the estrous cycle is that the menstrual cycle occurs in humans and some primates, while the estrous cycle occurs in most other mammals. In the menstrual cycle, females have a monthly period of bleeding, while in the estrous cycle, females experience a period of sexual receptivity known as "heat" or "estrus." Additionally, in the menstrual cycle, females can conceive at any time during their cycle, while in the estrous cycle, females are only fertile during specific times when they are in estrus.
How are humans formed?
By a females egg
Are all humans born females?
no
A girl last set of chromosomes is?
A human female has exactly the same number of chromosomes as a human male. In humans, each cell normally contains 23 pairs of chromosomes, for a total of 46. However, the 23rd pair, the sex chromosomes, differ between males and females. Females have two of the "X" version of this chromosome, while the male has an "X" version and a "Y" version.
What is the difference between male and female horses they both are ugly?
The male has an extra leg in between his back two. The females are ridden by both humans and male horses.
Two humans differ by about what percentage of their nucleotide bases?
they differ about .1% of their bases
What is the percentage of genetic difference between male and female humans?
There is only a small percentage of genetic difference between male and female humans, estimated to be around 0.1%. The majority of genes are shared between males and females, with the differences mainly located on the sex chromosomes (X and Y).
Why do humans have nipples?
Humans have nipples because they develop in the womb before the sex of the baby is determined. Both males and females start with nipples, but only females use them for breastfeeding.
How do mitosis and meiosis differ among humans chickens and alligators?
Meiosis differ among humans and alligators because the number of chromosomes that is given from the parents.
How does rectus abdominus differ in humans from cats?
The rectus abdominis muscle in humans is longer and more prominent compared to cats. In humans, this muscle is responsible for maintaining posture and flexing the trunk, while in cats, it primarily aids in breathing and support during movement. Additionally, the anatomical structure of the rectus abdominis muscle may also differ slightly between humans and cats.
How do you differ from the other planets in the solar system?
There are humans.
What are females?
They are human beings. Humans call them ladies , girls and woman
Are humans actors?
if they act they are!! but technically, actors are males and actresses are females.
