Meiosis Overview Flashcards
Meiosis is cell division that produces ________ cells.
sex
Sex cells are ______ and _____ cells.
Sperm; Egg
Meiosis occurs in the ________, which is the _________ for females, and ________ for males.
gonads; ovaries; testes
Half the number of chromosomes are needed to ensure the __________ _______ __ __________ after fertilization.
correct number of chromosomes
How many divisions are needed in meiosis?
2
The daughter cells are genetically ________.
different
What is a gamete?
A sex cell or haploid cell. In males, this is sperm, and in females, this is egg cells.
What is fertilization?
Joining two gametes (sperm+egg) to form a zygote.
What is a zygote?
A diploid cell produced from the fusion of 2 gametes.
What is a tetrad?
A pair of homologous chromosomes, each with two sister chromatids.
What is synapsis?
The pairing up of homologous chromosomes.
What is crossing over?
The exchange of chromosome segments (DNA) between homologous pairs during synapsis.
