4. Meiosis Flashcards
Topic - Meiosis
I. Sexual reproduction is a fusion of
II. Gametes are _
III. Chromosome number
IV. Gametogenesis
V. Fertilization
The production of offspring by sexual reproduction includes the fusion of ______.
two gametes
Gametes are a complete _____ (diploid/haploid) set of chromosomes.
haploid
Gametes are formed from specialized ______ (haploid/diploid) cells.
Diploid cells
Meiosis is the cell division of ______ cells that reduces the chromosome number by half in producing ______.
Diploid germ cells;
Haploid daughter cells (Gametes)
Meiosis ensures the production of ______ (diploid/haploid) phase in the life cycle of sexual reproduction.
Haploid phase
Meiosis occurs during gametogenesis in plants and animals.
T/F
True
Fertilization restores the haploid phase.
T/F
False,
Restores diploid phase
Topic - Key features of Meiosis
I. Two sequential cycles
II. Cycles of DNA replication or not
III. Pairing of __ chromosomes
IV. Recombination btw
V. Initiated after
VI. At the end, __
VII. Divided into:
Meiosis involves two sequential cycles of nuclear and cell division called ______ and ______.
Meiosis-I; Meiosis-II
Meiosis involves two cycles of DNA replication.
T/F
False,
only a single cycle of DNA replication
Meiosis involves the pairing of ______ chromosomes.
Homologous chromosomes
Meiosis involves recombination between sister chromatids of homologous chromosomes.
T/F
False,
between non-sister chromatids of homologous chromosomes
Meiosis I is initiated after the parental chromosomes have replicated to produce _____ (distinct/identical) sister chromatids at the ____ phase.
Identical; S phase
At the end of meiosis II, ____________ cells are formed.
Four haploid
