Cell Division and Cancer (LC 2027) (Leaving Cert Biology): Flashcards
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15 cards from this deck
How many chromosome sets in haploid cells?
How many chromosome sets in haploid cells?
Single set of chromosomes
How many chromosome sets in diploid cells?
How many chromosome sets in diploid cells?
Two complete sets of chromosomes
What are chromatids?
What are chromatids?
Identical DNA copies formed when DNA replicates
What is a centromere?
What is a centromere?
Region where chromatids remain joined
Symbol for haploid
Symbol for haploid
Symbol for diploid
Symbol for diploid
Examples of haploid cells in humans
Examples of haploid cells in humans
Gametes (sex cells): eggs and sperm cells
Human gamete chromosome number
Human gamete chromosome number
23 chromosomes ()
Examples of diploid cells in humans
Examples of diploid cells in humans
Somatic (body) cells: muscle, nerve, skin cells
Human somatic cell chromosome number
Human somatic cell chromosome number
46 chromosomes ()
Homologous pairs definition
Homologous pairs definition
Paired chromosomes in diploid cells, one from each parent
Human homologous pairs count
Human homologous pairs count
23 homologous pairs
Mitosis effect on chromosome number
Mitosis effect on chromosome number
Maintains number (diploid to diploid)
Meiosis effect on chromosome number
Meiosis effect on chromosome number
Reduces by half (diploid to haploid gametes)
Cells from mitosis vs gametes from meiosis
Cells from mitosis vs gametes from meiosis
Mitosis: 2 cells; Meiosis: 4 gametes