Review of some DNA terms and Meiosis
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Chromosome | Tightly coiled, compact strands of DNA. Cannot read the instructions but can move the strand easily.
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| Gene | A section of DNA that codes for a specific protein/trait
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| Chromatin | Long loose strands of DNA that can be used/read to build proteins.
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| DNA | Instructions for building proteins. A polymer made of monomer nucleotides. The sequence of nitrogen bases on the nucleotides make the code.
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| Sister Chromatids | When the DNA has been copied and is still attached to the replicated copy by a centromere.
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| Homologous Chromosomes | Two strands of DNA that have the same genes on them
One comes from the mother and one comes from the father.
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| Tetrads | When the homologous chromosomes are paired together and they are still attached to their replicated copy
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| Meiosis | Process that produces gametes with half the number of chromosomes as the parent. Needed so offspring can have same amount of DNA as parent.
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| Diploid | Two of each kind of chromosome (2N)
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| Haploid | One of each kind of chromosome (N)
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| Gamete | A haploid sex cell. (Egg for girls and sperm for boys.)
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| Fertilization | The joining of two haploid sex cells
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| Zygote | The diploid cell that results from the joining of gametes
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| Sexual Reproduction | The type of reproduction that joins 2 haploid gametes to make a genetically new individual (offspring)
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Created by:
k2hutson
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