Karyotype/Chromosomes/Meiosis Flashcards
What does karyotype tell you?
it can tell you the number of chromosome pairs, chromosomes, sex, and you can see abnormalities.
What is a chromosome? Chromatid?
Chromosome is a set of genetic material from one parent.
What is a chromatin? When can you see it?
Chromatin is cell’s DNA that is not yet condensed into chromosomes. You can see it in interphase inside the nucleous.
How are cells that have 46 chromosomes called? How are they created?
Somatic Cells. Created though mitosis.
How are cells that have 23 chromosomes called? How are they created?
Gamete Cells. They’re created through meiosis.
What do “2n” and “n” stand for?
It’s a notation used to describe if cell has/doesn’t a full set of chromosomes. “2n” means complete set (46) in the somatic cell. “n” means half of all chromosomes (23) in the gamete cells.
What is a difference between haploid and diploid cells?
Haploid cell has 23 chromosomes, but diploid cell has 46.
When and where can you find diploid double cells?
Those are cells that undergo mitosis or meiosis 1 and when their DNA is replicated.
When do you see haploid double cells?
They occur after meiosis 1 and where cells have 2 dad version of the chromosome but crossed over and therefore changed. Because those are chromosomes from the same parent, it’s considered half of the full set. That’s why it’s a haploid
When do you get haploid cells?
By the end of meiosis 2. Sperm and egg are haploid cells.
