2006-06-09 15:15:04 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Biology
Unfertilized ova as well as sperm are haploid, meaning they contain only one set of chromosomes. These are the only cells in the organism which have only half the number of chromosomes. We can say that haploid is "n". Diploid cells contain both sets from the mother and father, so it is "2n".
The zygote is basically an embryo which is the by-product of a fertilized ovum. It therefore has 14 chromosomes from the mother and 14 from the father, so 28 total. This assumes that all goes well. Sometimes there are chromosomal abnormalities but in the vast majority of cases the zygote has twice the number as the unfertilized ovum ("egg") as well as the sperm.
2006-06-09 15:24:33 · answer #1 · answered by bloggerdude2005 5 · 0⤊ 0⤋
28
2006-06-16 10:08:08 · answer #2 · answered by Anonymous · 0⤊ 0⤋
28
2006-06-09 23:10:01 · answer #3 · answered by arveen paria arasuk 6 · 0⤊ 0⤋
28
2006-06-09 22:17:02 · answer #4 · answered by Anonymous · 0⤊ 0⤋
Ordinarily 28, because the sperm will usually also
have 14. However in some animals the male has
only one chromosome of the sex chromosome
pair, so the sperm would have 13 and the zygote
27. There are even animals in which the female
has two or three pairs of sex chromosomes and the male has only one of each pair.
2006-06-12 16:52:37 · answer #5 · answered by Anonymous · 0⤊ 0⤋
egg n=14 plus sperm n=14 = 2n=28 chromosomes in zygote
2006-06-09 22:17:12 · answer #6 · answered by gopigirl 4 · 0⤊ 0⤋
That depends on the species, and on whether or not the sperm fertilizing the ovum was created without nondisjunction.
2006-06-09 23:04:12 · answer #7 · answered by ScSpec 7 · 0⤊ 0⤋