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23 Cards in this Set
- Front
- Back
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Luring Chapter 7 biology
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Cut the cards apart and STUDY!!
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Are chromosomes paired together and exchange DNA during anaphase II?
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No they are separated.
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What is the process called by which sperm are produced in male animals?
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spermatogenesis
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In asexual or sexual reproduction do two parents each pass copies of all of their cells to their offspring?
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sexual
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What is the exchange of corresponding portions of chromatids between homologous chromosomes
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Crossing-over
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Does asexual reproduction provide for genetic diversity?
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No
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Does Meiosis in female animals results in the same number of ova as sperm were produced by meiosis in the male?
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No
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Which does not provide new genetic combinations?
random fertilization cytokinesis independent assortment crossing-over |
cytokinesis
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When crossing-over takes place, chormosomes
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exchange corresponding segments of DNA
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The exchange of segments of DNA between the members of a pair of chromosomes
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acts as a source of variations within a species
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The more common name for an ovum is
a(n) |
egg
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Reproduction, which is the process of producing offspring, can be two what 2 types?
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asexual or sexual
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Draw metaphase 1 and anaphase 1
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Metaphase chromosomes line up at the equator
Anaphase chromosomes split and are pulled back to poles by spindle fibers. |
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What is one advantage of asexual reproduction?
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reproduce quickly, large numbers of offspring, simpler, only need one parent cell
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What are three ways in which genetic recombination results during meiosis?
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crossing-over,
gametes fuse- blending of traits, independent assortment of genes |
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What are some advantages of asexual reproduction?
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It is less complex,
The organisms do not use energy making gametes or finding a mate. When in a stable environment, organisms are able to produce many offspring in a short period of time. |
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What are some differences between meiosis I and meiosis II?
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Meiosis goes through the steps of mitosis twice
Four daughter celss are created from the original cell in Meiosis and in Mitosis it is 2 daughter cells. |
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What do we call an individual produced by asexual reproduction that is genetically identical to its parent?
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A Clone
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What does the fertilization of the haploid sperm and egg result in the restoration of what number of chromosomes in the zygote?
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diploid
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What is the process of a sperm and egg cell joining?
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fertilization
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What are the 4 haploid cells called that formed in the male at the end of meiosis II and develop and tail?
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sperm
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What is a reciprocal exchange of corresponding segments of DNA called?
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crossing-over
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What are the cells called resulting from meiosis in either males or females?
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gametes
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