7.4 SG Flashcards
(17 cards)
Meiosis
a type of cell division that reduces the number of chromosomes in the parent cell by half and produces four gamete cells
Fertilization
combination of 2 gametes
Homologous chromosomes
pairs of chromosomes in a diploid organism that have similar genes, although not necessarily identical
Sister chomatids
the identical copies formed by the DNA replication of a chromosome, with both copies joined together by a common centromere.
Haploid
a cell that contains a single set of chromosomes.
Diploid
a cell that contain two copies of each chromosome.
Somatic cell
the cells in the body other than sperm and egg cells
Gamete
a reproductive cell of an animal or plant
Crossing over
a cellular process that happens during meiosis when chromosomes of the same type are lined up
Independent Assortment
the alleles of two different genes get sorted into gametes independently of one another.
Sexual reproduction
the production of new organisms by the combination of genetic information of two individuals
Asexual reproduction
a type of reproduction in which a new offspring is produced by a single parent.
Explaining how genetic variation can occur in asexual reproduction vs sexual reproduction
Asexual reproduction generates an offspring that is genetically identical to a single parent and sexual reproduction has 2 parents that give the offspring unique traits
Comparing and contrasting prophase of mitosis with prophase I and II of meiosis
In prophase of mitosis each chromosome is repressed twice while in meiosis each chromosome is repressed once
Comparing and contrasting metaphase of mitosis with metaphase I and II of meiosis
During mitosis with metaphase 1 it has pairs of chromsomes while metaphase 1 in meiosis chromosomes have spindle fibers
Comparing and contrasting anaphase of mitosis with anaphase I and II of anaphase
Anaphase 1 separates homologous chromosomes while anaphase 2 separates sister chromatids
Comparing and contrasting parent and daughter cells of mitosis and meiosis
Mitosis has 2 identical daughter cells from a single parent cell while meiosis produces a genetically identical cell from the parent