0
Want this question answered?
Be notified when an answer is posted
Add your answer:
Earn +20 pts
How the 2 sex chromosomes compare to each other in female fruit flies?
There is a 50% chance of having a male or a female each time sex chromosomes and inherited. the 'X' chromosome is received from the mother. The 'Y' chromosome is received from the father.
Explaine the sex of an infant is genetically determined at conception.?
Male sex is tied directly to the Y sex chromosome. The Y chromosome codes for the proteins and enzymes that cause the changes that makes one phenotypically male. Any fetus without a Y chromosome will be genotypically and phenotypically female, only by lack of those proteins and enzymes mentioned before. Given that one sex chromosome comes from the ovum and one comes from the sperm, which fuse at conception, the genotypic and phenotypic sex of the fetus is determined at the time of conceptual fusion of the spermatozoa and ovum.
How can you tell if a genetic disorder in a pedigree chart is sex linked?
In humans (and other animals with the XX/XY sex chromosome configuration) a sex linked trait will show up in sons 50% of the time and 0% of the time in daughters of a female carrier.The only way that a female can have the necessary phenotype/genotype to display the trait is for thefather to be affected and the mother to be a carrier or affected herself.
Why is hemophilia considered to be a sex-linked trait-?
It is carried on the X chromosome.
Were boys once girls before they were born?
Yes, boys were once girls for a MINIMUM amount of time. As you may know, when you were created, your mother and father each combined half of their genetic information (23 Chromosomes each). One pair of these chromosomes help to determine your sex (Gender). If you're a female you contain two X chromosomes (1 From mother, 1 from father). Males have 1X and 1Y chromosomes. At the moment of conception you of course was male or female based on your genes but the Y Chromosomes doesn't kick in right away, in fact the first 5-6 weeks of development are attributed to the X chromosome alone. Once the Y chromosome is activated, one of the genes in the Y chromosome known as the SRYgene has two functions, to inhibit certain features of the X Chromosome and to impose through dominant physiological traits that a male must have. The Ovaries ascend and become the testicals and the labium fuses to become the scrotum and the male variant of the clitoris, yep it's the penis. While we're at it, this is also the reason why males have nipples. The nipples form before the activation of the Y Chromosome and the SRYgene and thus remain through development and life but you don't develop breasts!
Are children born male or female or is it decided at a later time as suggested by the gender schema?
It is actually decided at a earlier time, at conception. It depends on the chromosome in the sperm. If the sperm contains a X chromosome it will be female(all eggs contain an X chromosome) and if it contains a Y chromosome it will be male.
How the 2 sex chromosomes compare to each other in female fruit flies?
There is a 50% chance of having a male or a female each time sex chromosomes and inherited. the 'X' chromosome is received from the mother. The 'Y' chromosome is received from the father.
Why is the ratio of male to female births roughly 50-50?
Human females have two X chromosomes (XX), while males have an X chromosome and a Y chromosome (XY). During meiosis, these chromosomes segregate into separate gametes. All female ova carry a single X chromosome, while in males, half the sperm carry an X chromosome and half carry a Y chromosome. When these fuse together during fertilization, 50% of the time a sperm with an X will fuse with an ovum carrying an X, to generate an XX individual (female). The other 50% of the time, a sperm with a Y fuses with an ovum carrying an X to generate an XY individual (male). Hence, the 50-50 ratio of males to females is a direct result of half of male sperm carrying an X chromosome and half carrying a Y chromosome.
What are sex chromosomes in a human male?
We call these sex chromosomes. Whether you are a male or female depends on the presence or absence of certain chromosomes. The sex chromosomes are the X chromosome and the Y chromosome. If you have two XX, you will show female characteristics and If you have XY you will show male characteristics.
Is that possiblity of changing gender after 23 weeks of preganncy?
Gender is determined at the time of conception. The fertilizing sperm carries either an X (female) or Y (male) chromosome. There is no gender-switching.
what is the charge of X in XC2H3O2?
If you know the electric current, the flow of electric charge through an object, traveling through a circuit and how long the current is applied, you can calculate electrical charge using the equation for current Q = It in which Q is the total charge measured in coulombs, I is current in amps, and t is time that the ..
What is the conservation of charge law from maxwell's equations?
The conservation of charge law from Maxwell's equations states that the current through any enclosed surface is equal to the time rate of charge within the surface.
If a person inherits two X chromosomes that person will be?
If someone ends up with two x chromosomes (XX) Then they are a girl. If a person has one X chromosome and one Y chromosome(XY) then they are a boy. the men decide what sex the baby is since they have both an x and y. the women gives an x all the time.
A charge of 15 Coulomb flows through any area in a circuit each second the current is?
15 ampere. Since current = charge / time
How do men determine the sex of a baby?
Embryos are genotypically a boy or a girl at the time of conception. The chromosomes they inherit make them either XX(girl) or XY(boy). Because a female is XX, she will always contribute an X chromosome, but because a male has both, X and Y (XY), the male could either contribute an X chromosome or a Y chromosome.
WHAT IS 1 AMP?
If 1 C of charge flow through 1 second of time then electric current is 1 A
Do all fetus start as males?
No. All fetus' start as an egg that is fertilized from the male and the cells divide. Gender is determined at conception from the DNA in the sperm but it cannot be detected until a later time. Check www.3dpregnacny.com for week by week development of a fetus.
