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Who discovered that x and y chromosomes determined the sex of an organism?
The discovery that sex in many organisms is determined by the presence of X and Y chromosomes is credited to American geneticist Nettie Stevens and her colleague Edmund Beecher Wilson in the early 20th century. Stevens conducted experiments on mealworms and identified the correlation between the sex chromosomes and the sex of the offspring. Their work laid the foundation for understanding chromosomal sex determination in animals.
Is the sex of a second child determined by the sex of the first?
No, the sex of the second child is determined independently of the sex of the first child. The chances of having a boy or a girl are generally close to 50/50 regardless of the sex of any previous siblings.
Is the sex of the offspring determined by the female parents chromosomes?
No, the sex of the offspring is determined by the combination of chromosomes from both parents. In mammals, females have two X chromosomes (XX) while males have one X and one Y chromosome (XY). The sex of the offspring is determined by whether the father contributes an X or Y chromosome during fertilization.
How sex is determined in Valanga Sp with regard to its chromosome?
Valanga sp. sex is determined by using the XO system. This system use only one type of sex chromosome, the X. Females are XX while males have only one sex chromosome (XO). Sex of the offspring is determined by whether the sperm cell contain and X chromosome or no sex chromosome.
What scientist discovered that sex chromosomes differ in size?
Nettie Stevens discovered that sex chromosomes differ in size in 1905. She observed that the sex chromosomes in mealworms determined the sex of the offspring.
Is an embryo male or female?
In the early stages of development, an embryo's sex is not yet determined. The sex of the embryo is determined by the presence or absence of a Y chromosome from the father. Once the sex chromosomes are determined, the embryo will develop into a male or female.
What is the difference between 'sex-liked' and 'sex-determined'?
Sex-liked means liking sex and sex determined is the resolution to have sex.
Who discovered that x and y chromosomes determined the sex of an organism?
The discovery that sex in many organisms is determined by the presence of X and Y chromosomes is credited to American geneticist Nettie Stevens and her colleague Edmund Beecher Wilson in the early 20th century. Stevens conducted experiments on mealworms and identified the correlation between the sex chromosomes and the sex of the offspring. Their work laid the foundation for understanding chromosomal sex determination in animals.
What factors determined a person's status within early Chinese familys?
The status or each person in a Chinese extended family depended on his/her age and sex.
Is the sex of a second child determined by the sex of the first?
No, the sex of the second child is determined independently of the sex of the first child. The chances of having a boy or a girl are generally close to 50/50 regardless of the sex of any previous siblings.
What two factor that determined a persons status within early Chinese families?
The status or each person in a Chinese extended family depended on his/her age and sex.
In what condition is crocodile sex formed?
The sex of developing crocodilians is determined by the incubation temperature of the eggs. This means crocodilians do not have genetic sex determination, but instead have a form of environmental sex determination which is based upon the temperature embryos are subjected to early in their development. Crocodile embryos do not have sex chromosomes, and unlike humans sex is not determined genetically. Sex is determined by temperature, with males produced at around 31.6 °C, and females produced at slightly lower and higher temperatures. The average incubation period is around 80 days, and also is dependent upon temperature.
How is the sex of an individual determined?
Scientists do not determine the sex of a fetus. Science does, but scientists do not.
The sex of most animals is determined by special chromosomes called?
sex chromosomes
When is the sex of a child determined?
5 months
Sex in human beings is determined by?
Chromosomes
Is the sex of the offspring is determined by the female parents chromosomes?
No. it is determined by the male parent's chromosomes.
