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BIO 322 – FINAL EXAM QUESTIONS AND ANSWERS (100% PASS)
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BIO 322 – FINAL EXAM QUESTIONS AND ANSWERS (100% PASS)
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©PREP4EXAMS2024/2025 REAL EXAMS DUMP Wednesday, August 7, 2024 9: 33 PMBIO 322 – FINAL EXAM QUESTIONS AND ANSWERS (100% PASS)
mitosis - Answer✔️✔️-cell division producing genetically identical daughter cells
- start and end as diploid cells
meiosis - Answer✔️✔️-cell division producing 4 genetically unique gametes
- begin as diploid, end as haploid
interphase - Answer✔️✔️-- G1: active gene expression, prep for DNA synthesis
- S: DNA doubles, sister chromatids for each chromosome
- G2: cells prepare for division
stages of mitosis - Answer✔️✔️-- prophase: chromosome condensation, attach to
tubules
- metaphase: chromosomes align at center
- anaphase: tubules pull sister chromatids apart
- telophase: cells split to two daughter cells
what is the number of nuclear DNA molecules in metaphase of mitosis? -
Answer✔️✔️-46 chromosomes, each with 2 sister chromatids = 92 total chromatids
what is the number of nuclear DNA in telophase/cytokinesis of mitosis? -
Answer✔️✔️-46 chromosomes, each with 1 sister chromatid = 46 total chromatids
stages of meiosis I - Answer✔️✔️-- prophase I: homologs form tetrads and share
DNA (recombination) at chiasmata
- metaphase I: homologs align at center
1
, ©PREP4EXAMS2024/2025 REAL EXAMS DUMP Wednesday, August 7, 2024 9: 33 PM
- anaphase I: homologs separate
- telophase I/cytokinesis: cells split into 2 daughter cells
stages of meiosis II - Answer✔️✔️-- prophase II: breakdown of nuclear envelope of
2 cells, chromosome condensation
- metaphase II: sister chromatids align at center
- anaphase II: sister chromatids separate
- telophase II/cytokinesis: both cells split in 2; 4 unique daughter cells
what is the number of nuclear DNA in metaphase I in meiosis? - Answer✔️✔️-46
chromosomes with 2 sister chromatids each = 92 total chromatids
what is the number of nuclear DNA in telophase I in meiosis? - Answer✔️✔️-23
chromosomes with 2 sister chromatids each = 46 total chromatids
- 1/2 amount of DNA present after S phase
what is the number of nuclear DNA in telophase II in meiosis? - Answer✔️✔️-23
chromosomes with 1 sister chromatid each = 23 total chromatids
- 1/4 amount of DNA after S phase
features of x-linked recessive inheritance - Answer✔️✔️-1) more males affected
than females
2) if aY mates with AA, all progeny will have dominant phenotype (all females
Aa, all males AY)
3) if aY mates with Aa, dom:rec ratio will be 1:1
4) mating of aa with AY will yield aY and Aa
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