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True or False nondisjunction always result in a zygote with an extra chromosome?
Xoxocutegirl95
False. In cases of individuals with turner syndrome, Females have only 1 X chromosome to determine sex, where "normally" a female has XX or a male has XY.
Now understand that a zygote is a fertilized egg. If you meant gametes, which are egg or sperm cells, True, non-disjunction causes an excess amount of chromosomes in at least one of the four gametes that meiosis produces.
I hope that helps.
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∙ 14y ago
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How can nondisjuncton result in an individual having an extra chromosome what is this called?
Yes, nondisjunction results in a germinal cell (ovum or spermatozoa) with either too many or too few chromosomes. If one of these cells joins with another to form a zygote, there may be one or more too many or too few chromosomes in the cells.
During fertilization if a sperm cell containing an x chromosome combines with an egg the resulting zygote will re result in a male?
False
How can nondisjunction in meiosis result in a diploid gamete?
If all of the chromosomes fail to separate in meiosis, then nondisjunction can result in a diploid gamete. This is a type of chromosomal mutation. In animals, a zygote produced from the union of a mutated diploid gamete and a normal haploid gamete will have triploidy, which is lethal. In plants, this is not necessarily lethal.
What does the 23Rd chromosome represent?
The 23rd chromosome is the sex chromosome. It is either an X or Y (strictly male) chromosome. When the sperm and egg cells fuse, they combine into 46 chromosomes with either two X chromosomes or an XY pairing. If it is 2 X chromosomes, the zygote is a female. If it is an XY pairing, the zygote is a male.
When is the the sex of a zygote determined?
Sex is determined by the sperm cell that fertalized it. The egg supplies an X chromosome, and the sperm cell supplieds an X or a Y chromosome. If the result is XX, it is female, if it is XY, it is male.
How many chromosomes will a zygote with trisomy have?
Meiotic nondisjunction. In meiosis I or II, chromosome pair 21 fail to separate correctly, leaving one gamete with an extra chromosome 21.
What two types of sperm result if nondisjunction of sex chromosomes occur during meiosis 1?
if nondisjunction occurs in meiosis 1 then the resultant sperms are XY carrying sperm n sperm without sex chromosome............ if XY carrying sperm fertilizes with normal X carrying ovum it results in XXY abnormal zygote if sperm without sex chromosome fertilizes with normal X carrying ovum it results in XO abnormal zygote
How could a zygote be produced with an XYY karyotype?
An XYY zygote can be formed if a pair of sex chromosomes fails to separate during meiosis, so the gamete formed has both the X and Y chromosomes. This gamete would then meet the other gamete from the other cell that would contain a Y sex chromosome. The resulting zygote that is formed would have XYY sex chromosomes. This abnormalty where there is an extra chromosome or is missing a chromosome is called nondisjunction.
Does a zygote ha ve a diploid chromosome number?
yes zygote do have diploid chromosome number
Why does the loss of Chromosome material result in more zygote death?
Because ith does b/c the intracellular telekites interact with the soclamolotes and causes the loss of chromosome material.. then the zygote dies b/c not all the material is in tact for it..
How can nondisjuncton result in an individual having an extra chromosome what is this called?
Yes, nondisjunction results in a germinal cell (ovum or spermatozoa) with either too many or too few chromosomes. If one of these cells joins with another to form a zygote, there may be one or more too many or too few chromosomes in the cells.
During fertilization if a sperm cell containing an x chromosome combines with an egg the resulting zygote will re result in a male?
False
How can nondisjunction in meiosis result in a diploid gamete?
If all of the chromosomes fail to separate in meiosis, then nondisjunction can result in a diploid gamete. This is a type of chromosomal mutation. In animals, a zygote produced from the union of a mutated diploid gamete and a normal haploid gamete will have triploidy, which is lethal. In plants, this is not necessarily lethal.
Is a zygote the result of fertilization?
Yes, a zygote is the result of fertilization. It is the result of the joining of sperm and egg.
Is zygote Is The Result Of Fertilization?
Yes, a zygote is the result of fertilization. It is the result of the joining of sperm and egg.
In humans a zygote will develop into a male it the?
egg contributes an X chromosome and the sperm contributes a Y chromosome.
How many chromosomes are in a egg cell of a sheep?
it all depends on the zygote which has not been able to find out the total chromosome's in the zygote.
