0
Almost any cell with a nucleus can be used for chromosome analysis. If a person gets skin cells under the finger nails, these can be used for DNA analysis. It might happen in a crime. A fetus sheds skin cells before birth and these can be used as well.
Wiki User
∙ 10y ago
Add your answer:
Earn +20 pts
How many pair of chromosomes do normal human cells contain?
Gametic [haploid] Cells are chromosome number n - which involves 23 individual chromosomes. Somatic [or diploid] Cells are chromosome number 2n - which involves 23 pairs of chromosomes. Mitotic Cells are 4n.
Why is a human cell containing 22 autosomes and a y chromosome a sperm?
Human somatic (body) cells contain two sets of 23 chromosomes. Human gametes (sperm and egg cells) contain one set of 23 chromomes -- 22 autosomes and 1 sex chromosome. Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome. The ovum can carry only an x chromosome, never a y chromosome. So a cell containing 22 autosomes and a y chromosome must be a sperm cell.
How many sets of chromosomes does a human cell have?
46 A human fetus starts out as two reproductive cells with 23 chromosomes each, making a fertile 46 chromosome cell that grows into a fetus. So, we are basically just a bunch of developed 46-chromosome-enriched cells.
What portion of the human Y chromosome is homologous to the human X chromosome?
biology!
What percentage of human sperm Cells carry an X chromosome?
50 % of human sperm Cells are an X chromosome, the other half are a Y chromosome: {diploid = 2n = 1 chromosome pair; haploid = n = 1 chromosome - including the meiotic single chromosome = n}. All sperm and egg Cells carry one set each of n (23 single) chromosomes. When a sperm and an egg combine either: a) a sperm Cell with the X chromosome merges with the [X-chromosome] egg Cell and the baby will be a girl; or b) a sperm Cell with the Y chromosome merges with the egg Cell and the baby will be a boy.
How do cells become a full human body?
the chromosome and the
How many chromosome do normal human body cells have?
5
How many sex cells chromosome does human have?
23 chromosomes
How many chromosome's do human body cells contain?
21
Do human cells have 46 genes?
No. The human cell has 23 chromosome pairs (total 46 chromosomes). Each chromosome has many genes.
How is the haploid chromosome number?
The haploid chromosome number is half the chromosome number of the body cells. For example, in humans, body cells have 46 chromosomes. In human haploid cells (sex cells), there are 23 chromosomes.
How are the human sex cells chromosomes labled?
x chromosone and y chromosome
How many genes do cells obtain?
The number of genes varies from chromosome to chromosome and the number of chromosomes varies from species to species (from as few as 1 single chromosome per cell to as many 30,000 chromosome pairs per cell). Human cells have 23 chromosome pairs per cell.
Do normal sperm or egg cells in a human have one copy of each chromosome?
Yes.
What sex chromosomes does a female have in all her cells?
A female human has two X sex chromosomes in her cells. A male human has one X and one Y sex chromosome in his cells.
How many pair of chromosomes do normal human cells contain?
Gametic [haploid] Cells are chromosome number n - which involves 23 individual chromosomes. Somatic [or diploid] Cells are chromosome number 2n - which involves 23 pairs of chromosomes. Mitotic Cells are 4n.
Why is a human cell containing 22 autosomes and a y chromosome a sperm?
Human somatic (body) cells contain two sets of 23 chromosomes. Human gametes (sperm and egg cells) contain one set of 23 chromomes -- 22 autosomes and 1 sex chromosome. Only a sperm cell can carry a y chromosome. A sperm cell can also carry an x chromosome. The ovum can carry only an x chromosome, never a y chromosome. So a cell containing 22 autosomes and a y chromosome must be a sperm cell.
