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31 Cards in this Set
- Front
- Back
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Interphase |
Prep time for cell division (G1,S,G2) |
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G1 |
Replication of organelles. |
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Synthesis |
DNA replication, centrosome replication |
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G2 |
Protein synthesis |
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Spermatogenesis |
4 haploid sperm |
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Oogenesis |
1 haploid secondary oocyte and 2 or 3 polar bodies |
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Cytokinesis - plant |
Cell plate formation |
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Cytokinesis - animal |
Cleavage brow |
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Haploid |
(1n) contains 23 chromosomes, 1 of each pair |
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Diploid |
(2n) contains 46 chromosomes, look alike, code for the same trait. |
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Synapsis |
Homologous chromosomes line up side by side. |
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Crossing over |
Exchange of genetic info between 2 non-sisyer chromosomes |
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Allele |
Alternate form of a gene at the same location on a pair of homologous chromosomes |
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Homozygous |
Alleles are the same (AA, aa) |
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Heterogeneous |
Alleles are different (Aa) |
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Dominant |
Covers the effect of a recessive allele |
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Recessive |
Not physically observed when combined with a dominate allele. |
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Genotype |
Combination of alleles (PP,Pp,pp) |
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Phenotype |
Physical traits (purple flower, white flower) |
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Monohybrid |
Cross 2 individuals for 1 trait, (3:1) |
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Gene |
Portion of DNA that codes for a trait |
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Dihybrid |
Cross between 2 individuals for 2 traits. (9:3:3:1) |
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When does a phenotype of a recessive trait expressed? |
Only when the alleles are homozygous recessive |
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Polygenic inheritance |
Individuals Ina population have a range of small different traits |
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Codominance |
Two dominate alleles fully expressed, one recessive allele |
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Incomplete Dominance |
Two alleles partly expressed |
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Autosomal Dominate |
AA, Aa- affected aa- not affected (Neurofibromatosis, Huntington Disease) |
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Autosomal Recessive |
AA- not affected, Aa-not affected(carrier), aa- affected (Cystic Fribrosis) |
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Codominance |
A- Aa or AO B- BB or BO AB- AB O- OO (Blood type) |
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Incomplete Dominance |
HbA HbA- normal HbA Hbs- SC trait Hbs Hbs- SC disease (Sickle cell Anemia)
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X- Linked |
XB XB - normal XB Xb- normal, carrier Xb Xb- color blind XB Y- normal Xb Y- color blind (Color blind, Hemophilia A) |
