Bio Sci 93 Final Review (trio) Exam Questions With 100% Correct Answers (Verified A+ Pass)
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Course
Bio Sci 93
Institution
Bio Sci 93
Bio Sci 93 Final Review (trio) Exam Questions With 100% Correct Answers (Verified A+ Pass)
5 Stages in Cell Cycle - Answers - G1, G2 , S phase, Mitosis/Cytokinesis, G0
What happens during G1/G2 phase in the cell cycle - Answers - Growth
Checkpoints: regulate the cell cycle
What happens du...
Meiosis - Answers -✔✔ A special type of cell division- unique to organisms that
reproduce through sexual reproduction-
Producing - Gametes
Gametes - Answers -✔✔ Have half the amount of genetic information (sperm and egg
cells)
What happens in Meiosis I - Answers -✔✔ It divides Homologous chromosomes
through Prophase I, Metaphase I, Anaphase I, and Telophase I/Cytokinesis
Prophase I - Answers -✔✔ Duplicated Homologous chromosomes pair and exchange
segments (During Synapsis Crossing Over occurs at the Chiasmata-
Chiasmata - Answers -✔✔ Crossing over of homologous pair which are physically
connected to each other and exchange genetic information
, Metaphase I - Answers -✔✔ Chromosomes line up at the metaphase plate by
homologous pairs
Anaphase I - Answers -✔✔ Each pair of homologous chromosomes separates
Telophase I and Cytokinesis - Answers -✔✔ 2 Haploid cells form - each chromosomes
consisting of 2 sister chromatids
Meiosis 2 - Answers -✔✔ Separates sister chromatids the same way as in Meiosis 1 -
ending up with 4 haploid cells each different from parental cells and each other.
What is Non-disfunction - Answers -✔✔ Failure of homologous chromosomes to
separate
What are the 3 methods for genetic variation - Answers -✔✔ 1. Independent
assortment of chromosomes
2. Crossing Over
3. Random Fertilization
Independent Assortment of Homologous chromosome - Answers -✔✔ Occurs in
Meiosis 1
2 homologous chromosomes separate independently
Crossing Over - Answers -✔✔ Genetic recombination
occurs in Prophase 1
Random Fertilization - Answers -✔✔ Egg and Sperm joining- creating the most
effective way to obtain genetic variability
Law of Segregation - Answers -✔✔ Alleles coding for same trait separate
independently during gamete formation
Compare Mitosis vs. Meiosis in DNA Replication - Answers -✔✔ Both occur during
Interphase
Compare Mitosis vs. Meiosis in Divisions - Answers -✔✔ Mitosis - 1
Meiosis - 2
Compare Mitosis vs. Meiosis in Synapsis and Crossing Over - Answers -✔✔ Mitosis -
Does not occur
Meiosis - Form tetrads in Prophase 1
Compare Mitosis vs. Meiosis in Daughter Cells - Answers -✔✔ Mitosis - 2 genetically
identical
Meiosis - 4 genetically different
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