DNA Molecule: Chromosome Map
The millions of bases which make up the human genome are organized into structures called chromosomes. These are arranged into 22 matching pairs plus 1 pair of sex chromosomes consisting of 2 X's in women and an X and a Y in men. So humans have a total of 46 chromosomes in each cell, known collectively as a karyotype. This set of chromosomes has a Y, so it must belong to a male.
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DNA is organized into 46 chromosomes including sex chromosomes, 3D animation
DNAFTB Problem 8: Take a look at human chromosomes.
Our genome is a set of long DNA molecules containing tens of thousands of genes.
DNAFTB Concept 9: Study of meiosis revealed the chromosomal basis of sex.
A male karyotype.
Professor David Porteous explains that breakpoints in the genome are locations on a chromosome where DNA might get deleted, inverted, or swapped around.
A portrait of human chromosomes: this process labels the chromosomes with multicolored fluorescent tags, allowing researchers to consistently distinguish between chromosomes.
Offspring arise from the union of specialized sex cells â a female egg and a male sperm.
Matt Ridley talks about chromosome 2, fusion of 2 small chromosomes.