JCJC Bio I Final Exam with Complete
Solutions
Meiosis I Correct Ans-each duplicated homologous chromosome is separated from its partner
(PMAT I)
Meiosis II Correct Ans-sister chromatids are separated (PMAT II)
Use of mitosis Correct Ans-divide cells and produce genetically identical daughter cells; skin
cells (somatic)
Use of meiosis Correct Ans-produces haploid cells from diploid; ovaries and testes (gametes)
Use of binary fission Correct Ans-prokaryotes use to divide and produce genetically identical
daughter cells
Regulates cell cycles Correct Ans-external and internal signals such as CDK, MPF, and p53
Cancer Correct Ans-cell cycle checkpoints malfunctions and cell division becomes
uncontrollable; abnormal cells spreading to other tissues
Metastasis Correct Ans-malignant cells spread to new areas
, Number of chromosomes after mitosis Correct Ans-stays the same
Number of chromosomes after meiosis Correct Ans-chromosome(1/2) 23 = 46
Down Syndrome Correct Ans-results from the presence of an extra copy of chromosome 21;
also known as Trisomy 21; caused by nondisjunction in meiosis (I or II)
Autosomes Correct Ans-non-sex chromosomes; homologous chromosomes 1-22 in humans
Sex chromosomes Correct Ans-X and Y; determines gender and other non-gender related traits
Y chromosome Correct Ans-contains SRY gene which induces male sexual development in an
embryo
Law of Segregation Correct Ans-organisms have 2 alleles and they separate from each other to
end up in different gametes after meiosis
Law of Independent Assortment Correct Ans-alleles for different traits segregate
independently during gamete formation
Allele Correct Ans-different versions of the same gene
Genotype Correct Ans-genetic makeup of an organism
Solutions
Meiosis I Correct Ans-each duplicated homologous chromosome is separated from its partner
(PMAT I)
Meiosis II Correct Ans-sister chromatids are separated (PMAT II)
Use of mitosis Correct Ans-divide cells and produce genetically identical daughter cells; skin
cells (somatic)
Use of meiosis Correct Ans-produces haploid cells from diploid; ovaries and testes (gametes)
Use of binary fission Correct Ans-prokaryotes use to divide and produce genetically identical
daughter cells
Regulates cell cycles Correct Ans-external and internal signals such as CDK, MPF, and p53
Cancer Correct Ans-cell cycle checkpoints malfunctions and cell division becomes
uncontrollable; abnormal cells spreading to other tissues
Metastasis Correct Ans-malignant cells spread to new areas
, Number of chromosomes after mitosis Correct Ans-stays the same
Number of chromosomes after meiosis Correct Ans-chromosome(1/2) 23 = 46
Down Syndrome Correct Ans-results from the presence of an extra copy of chromosome 21;
also known as Trisomy 21; caused by nondisjunction in meiosis (I or II)
Autosomes Correct Ans-non-sex chromosomes; homologous chromosomes 1-22 in humans
Sex chromosomes Correct Ans-X and Y; determines gender and other non-gender related traits
Y chromosome Correct Ans-contains SRY gene which induces male sexual development in an
embryo
Law of Segregation Correct Ans-organisms have 2 alleles and they separate from each other to
end up in different gametes after meiosis
Law of Independent Assortment Correct Ans-alleles for different traits segregate
independently during gamete formation
Allele Correct Ans-different versions of the same gene
Genotype Correct Ans-genetic makeup of an organism
