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These letters represent the four possible combinations of alleles for a gene located on the X and Y chromosomes. In genetics, "XX" represents a female with two X chromosomes, "XY" represents a male with one X and one Y chromosome, "YX" does not have a genetic meaning, and "YY" is not a valid combination as males cannot have two Y chromosomes.
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What sex chromosomes do girls have?
the combination of sex chromosomes for a female is XXX it is the triple x because in 1947 a women in North Bonerville Africa found that women have 3 sex chromosomes while males only have two
What chromosome has to be present for a mother to have a male child?
A mother needs to contribute an X chromosome to her child for them to be male. The father contributes a Y chromosome, resulting in an XY chromosome pair which determines a male child.
What is the penotype of Yy?
yY
What becomes of a YY genotype?
In mice the YY genotype is lethal during embryonic development. This means that the mating of heterozygous individuals will produce a ratio of 2:1 Yy to yy offspring.A 'YY' genotype is homozygous dominant for that particular trait. If it is Yy, it will be heterozygous.
What percent of the offspring will display the recessive trait if parent 1Tt crosses with tt?
Crossing Yy x Yy yields YY, 2Yy, yy. Since Y is dominant over y, then YY and 2 Yy all result in the same phenotype. Therefore 3/4 of the offspring will resemble their parents.
Ahuman can Carrie YY or YYY or XY chromosome?
A human can carry either XX (female) or XY (male) chromosomes. In some cases, individuals may have variations such as XYY or XXX, but these are less common.
What does it mean when an artist's name is followed by after and another artist's name?
'XX after YY' means that YY made a painting and XX made this copy of it.
What is the genotype of a male and female?
These genotypes are determined by a human's 23rd pair of chromosomes. If the subject is female, she has two X's reading XX. If it is male, then his genotype will read XY. There is a 50-50 shot of each. This is because a woman donates one chromosome (she only has two X's so it is inevitable that she will donate an X), and a man donates one of his. If a man donates his 'X' then there will be two X's and the child will be female. If he donates his 'Y' then the child will be male.Male is XY, female is XX. There are, however, other genotypes (XXY, XXX, XO...) and not all people have a phenotype that goes with their genotype.
Is a male YY or XY?
Males are typically XY, with the Y chromosome determining male sex characteristics. The combination of XX typically results in females. In certain rare cases, individuals can have a YYY or XXYY combination, leading to variations in sexual development.
How would you distinguish between an acid and a base?
You would have to look at the nurk of the base and the whapple of the acid and i it is an xx and yy it would distinguish because then it dismanages it but otherwise if it is xy yx then it physicaly can't distinguish experimentally without tasting it.
What does 'oo xx yy' mean in a text message?
it means hugs and kisses
What genes do transsexuals contain ie boys have XY girls have XX?
Transsexual individuals, like all individuals, have a combination of genes that determine their sex. This can include a variety of combinations beyond just XX or XY, such as XXY, XYY, or even other variations. Gender identity is a complex interplay of genetic, hormonal, and environmental factors, and cannot be solely attributed to a specific gene or chromosome.
What sex chromosomes do girls have?
the combination of sex chromosomes for a female is XXX it is the triple x because in 1947 a women in North Bonerville Africa found that women have 3 sex chromosomes while males only have two
How do you rewire ignition keys on a pocket bike?
power the switch without power of switch pos with led from batt then use extra switch once started to switch to 3 point relay switch that allows arc pos to link neg daht to the cct and begin the cycle of yxyxz energy flow ex ..... when energy connects to pos to pos there is a spark right? so pos to neg there is xz as yxzz is neg to yyz there of yyx is poz to zzx in there of xyz is xy yx to zz meaning : this when you have xy yx to z you get xz yz there of pos and yy xx there of neg So, the ex is this 1 connect z the pos to z then y to pos and x to the first neg with out there being xy connect... 2 the xy connect needs a breaker... 3 the zyx connect must be at all time connected except when the energy is used it must move to the second position which is yzx without losing the energy processed to both connections "the key turn, switch had a magnet in it that does this ..." you can do this with using 2 switches. 3 first stitch is on or off the second switch is acc on off this pushes the energy required to keep the battery running to the ground ... like the magnet. so when the switch is giving both negs to the ground which is yx or xy in case zxy of yx or xy there of x or y the terminal is feeding both the ground of the llights or engine to the positive side of the moto start ,,, which makes the engine stall because the motor tries to spin both diredtion even tho the gas explosed to make it start. so x then y then xz of xy to the process of xzy yzx ending in xx zy xz yzx to xyz of the ground... four of three. no magnet 2 switches turn one on then the next off and the remove the first pos xx of xzy to get x y z
What is the meaning of powers and roots in complex numbers?
The meanings are the same but getting the answers use different rules. Ex: 1. None complex-(x+y)^2=xx+yy+2xy and is a family of parallel lines. 2. Complex-(x+iy)^2 Now notice the "i operator" and how it is used in the computation. (x+iy)(x+iy)=xx+i2xy+iiyy. Now i=(-1)^.5, so ii=-1 and so we have xx-yy+i2xy. If we graph this out, we get families of parabolas at right angles to each other. The (xx-yy) are the real and at right angles to the i2xy, the imaginaries. Maybe somebody else can tackle the roots.
What chromosome has to be present for a mother to have a male child?
A mother needs to contribute an X chromosome to her child for them to be male. The father contributes a Y chromosome, resulting in an XY chromosome pair which determines a male child.
How do you simplify complex numbers to a negative exponent?
Lets try z^-1 which is 1/z. Now z=x+iy then 1/z = 1/(x+iy). This is equal to (x-iy)/((x+iy)(x-iy)) and is equal to (x-iy)/(xx+yy). The real part is u=x/(xx+yy) and the imaginary part is -y/(xx+yy). Don't forget that i squared is -1 when working out (x+iy)(x-iy). Get a good program like Mathmatica as higher exponents get real time consuming and will cause brain damage! Netflyer
