DNA is present in the nucleus of the cell on the structures called chromosomes. we get one copy of chromosomes from each of our parent and hence their DNA.
how is DNA passed on from our parents?
- Every person has two copies of human genome or chromosomes.
- One copy is passed down from their mother (through the egg), while the other is passed down from their father (via the sperm).
- Both sperm and eggs have one set of 23 chromosomes.
- When sperm fertilizes an egg, two copies of each chromosome (and hence two copies of each gene) are present, resulting in the formation of an embryo containing 46 chromosomes.
The labels depict the following
A. Length of DNA strand and how the DNA is compacted in the chromosome
B. cell
C. nucleus
D. chromosomes
E. chromatids
F. DNA helix
G. Nitrogen bases
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