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Bio Unit 2 Sec 3 #4

Lecture 17: Meiosis and Human Reproduction

QuestionAnswer
The production of sex cells called gametes is ______ Meiosis
The female gamete is called the ____ Egg
The male gamete is called the _____ Sperm
Gametes are _____ (1n), which means there is one _____ copy of each chromosomes Haploid; 1
Gametes fuse during _________ (sperm fuses with egg) Fertilization
When gametes fuse during fertilization, they result in a ______ (2n) gamete that will develop into an _____ organism Diploid; Adult
A diploid organism has ____ copies of each ______ 2; Chromosomes
All eukaryotes are ______ organisms Diploid
The first cell division is called: Meiosis 1
In ______1, sister chromatids and their identical copies are joined by a synapsis forming a ______ Prophase; Tetrad
During Prophase 1, crossing over occurs which involves the exchange of pieces of ________ chromosomes Homologous
The crossing over in Prophase 1 greatly ______ the genetic ______ of offspring Increases; Variability
In Metaphase 1, _____ are lined up along the metaphase _____ by the centrosome and microtubules Tetrads; Plate
During Metaphase 1, random/independent ______ occurs Assortment
The ways the chromosomes line up in Metaphase 1 is completely ______ Random
There are ____ million different combinations of alleles in 1 _____ Eight; Gamete
When 2 gametes come together there are ____ billion different possible combinations of ______ 64; Allelles
Random/Independent assortment greatly _____ the genetic variability of offspring Increases
Phase in Meiosis where microtubules separate the tetrads and pull them to opposite ends of the cell Anaphase 1
In Anaphase 1, the cell _______ Elongates
Created by: scarangelo
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