Meiosis and Sexual Life Cycles. The process of creating sex cells i.e.: Eggs (females) Sperm (males). Cell Reproduction. Asexual (vegetative) reproduction A form of duplication using only mitosis. Example, a new plant grows out of the root or a shoot from an existing plant.
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Meiosis and Sexual Life Cycles
The process of creating sex cells
i.e.: Eggs (females)
How Do Scientists Read Chromosomes?
Make a Karyotype
Karyotype: a visual representation of the organization of the chromosomes in the cell of an organism.
Haploid (n)-- one set chromosomes. In humans n=23
Figure: Sexual Life cycle
Diploid multicellular organism
Unique Features of Meiosis
Comparison of Meiosis and Mitosis
Meanwhile, centrosomes move away from each other and spindle fibres form between them.
The nuclear membrane disappears.
Stages of Meiosis
Cdck- cell division activity
Independent Assortment and Gamete Diversity
Random Orientation of Chromosomes During Meiosis
Independent Assortment of Alleles
Using Karyotypes to Predict Genetic Disorders
3 of chromosome 21
Ex. Crie du chat
Cri du Chat Syndrome ("Cry of the cat" in French) is a genetic disorder caused by the loss or misplacement of genetic material from the fifth chromosome. It was first identified in 1963 by Professor Lejeune, who also identified the genetic cause of Downs Syndrome. He described the syndrome after the sound that many of the babies and young children make when crying.
Mistakes in Meiosis