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Study Stack #6

Explain the importance of cell division to the organism. Cells must divide so an organism can grow and reproduce and repair itself.
Differentiate between sexual and asexual reproduction. No union or combination of gametes Offspring comes from one parent Mitosis occurs to make new offspring or replace cells No meiosis occurs Union of gametes (egg and sperm) Genetic information is exchanged during meiosis Two parents are involved
Explain the role of the egg and sperm in fertilization The egg and sperm each have 23 chromosomes. These chromosomes have their own combination of DNA due to crossing over between homologous chromosomes. This means when the egg and sperm come together they create a unique individual.
Differentiate between a haploid and diploid cell A haploid cell has one chromosome of each homologous pair and a diploid cell has both chromosomes of a homologous pair.
Define meiosis and explain the creation of gametes. Explain how meiosis contributes to the differentiation among organisms: In meiosis crossing over occurs and genetic information is exchanged between homologous chromosomes. Two divisions also take plac This means when the egg and sperm come together in fertilization the new body cells of the new organisms have a full amount of chromosomes (the diploid number) in their body cells. It also means that a new organism has its own DNA combination in its chro
What is important to know about the chromosomes and the amount of DNA in the cells at the end of MEIOSIS 1?
What is important to know about the chromosomes and the amount of DNA in the cells at the end of MEIOSIS 2?
How many chromosomes are in the daughter cells at the end of mitosis? How many chromosomes are in the daughter cells at the end of meiosis?
In meiosis 1, what happens when the homologous chromosomes line up next to each other. Why is this important to the creation of gametes and the resulting zygote?
Created by: 23efritz
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