10.3 Flashcards
(19 cards)
What is meiosis
Cell division to create gametes
What are Homologous chromosomes
2 sets of chromosomes that are the same
What are Sister chromatids
One pair of chromosomes that are the same, 2 pairs of sister chromatids make up a homologous chromosome pair
What is Fertilization
When a sperm cell combines with a egg cell
What is Asexual reproduction
Reproduction without s_x
What is Sexual reproduction
Reproduction with s_x
What is a Gamete
A reproductive cell with half the # of chromosomes
What is a Somatic cell
any cell of a living organism other than the reproductive cells.
What is a Haploid (n) cell
a cell with half the # of chromosomes
What is a Diploid (2n) cell
A cell with the chromocomes
What is a Tetrad
a group or set of four single chromosomes
What is Synapsis
the fusion of chromosome pairs at the start of meiosis.
What is Crossing over
When parts of the chromosomes swap
What is Independent assortment
It depends on how the homologous chromosomes line up in metaphase
Order and events of meiosis
IPMATPMAT
When is the chromosome # reduced in half in meiosis
It is reduced in half after anaphase 1 and again after anaphase 2
Sources of genetic variation
Mutations, crossing over, individual assortment
Compare/contrast mitosis and meiosis
Compare/contrast asexual and sexual reproduction
