Homework Answers
(35) Purpose of Meiosis is to reduce the normal diploid cells to haploid cells. This facilitates the maintenance of chromosomal number after fertilization.
(36) Meiosis involves two cell divisions resulting in 4 daughter cells from a diploid cell. DNA replication happens only once.
(37)Homologous chromosomes are similar but not identical chromosomes. They are pairs of chromosomes in a diploid organism with similar gene/allele pairs. They contain same alleles.
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produce haploid gametes; then those gametes can fuse to form a diploid zygote. 35. What is...
Prophase Prometaphase Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x...
Prophase Prometaphase Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Metaphase Anaphase Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Prophasel Metaphase 1 Diploid or iploid 1x 2 of 4 DNA content? Diploid or Haploid! 1x2x4x DNA content? Oo Anaphase Diploid or Haploid! 1x. 2x or 4x DNA...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg in Telophase 2 and zygote formation after Cytokinesis 2 Question 3 1 pts Pg 99. Why is it essential that each gamete receive only one set of chromosomes, in other words. why must gametes be haploid? Because a haploid gamete can then fuse with a diploid egg or diploid sperm which promotes fertilization and development of a zygote. Because when gametes fuse in fertilization,...
Meiosis produces haploid gametes, how is the diploid number restored in diploid organisms? Sexual reproduction resulting...
Meiosis produces haploid gametes, how is the diploid number restored in diploid organisms? Sexual reproduction resulting in fertilization Reverse Meiosis O Production of sister chromatids during S phase Synapsis
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10....
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10. During meiosis, the chromosome number: a) is doubled b) is reduced c) remains the same d) becomes diploid 11. Meiosis produces haploid (#) reproductive cells called _ 12. Name the 2 human gametes & tell their chromosome number. 13. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 14. How many times do cells divide during meiosis? 15. What...
Homologous chromosomes pair along their length during prophase 1 of meiosis.
Question 36 Homologous chromosomes pair along their length during prophase 1 of meiosis. While two homologues are paired, genetic exchange may occur between them in a process called _______ syngamy nondisjunction independent assortment crossing over Question 37 At the end of meiosis II, there are _______ 2 haploid daughter cells that are genetically different 4 haploid daughter cells that are genetically identical 4 haploid daughter cells that are genetically different 2 diploid daughter cells that are genetically identical 4 diploid daughter cells that are genetically differentQuestion 38 When do homologous chromosomes separate from...
When does the separation of homologous chromosomes occur? • O A. Meiosis 2 • O B....
When does the separation of homologous chromosomes occur? • O A. Meiosis 2 • O B. Before Meiosis • . C. Meiosis 1 D. After Meiosis Reset Selection If a cell has 24 pairs of chromosomes in its diploid state, how many chromosomes will it have after Meiosis 2? • • • • A. 24 B. 12 C. 48 D.6 Dan What structure is responsible for separating the chromosomes during Meiosis? A. Spindle Fibers B. Cytoplasm C. Metaphase plate •...
4. Complete the following table. Mitosis Meiosis MitosisMeiosis Synapsis (Yes or no Crossing over (When) Anaphase...
4. Complete the following table. Mitosis Meiosis MitosisMeiosis Synapsis (Yes or no Crossing over (When) Anaphase I results When do centromeres divide No. of divisions No. of cells resulting Anaphase II results No. of chromosomes in daughter cells Assume cell divisions are occurring on the arrows in this gen- eralized plant life cycle. Show where mitosis and meiosis occur. 5. Multicellular diploid plant Spore Multicellular haploid plant Starting with a diploid cell (A) that has 2 homologous chromo- somes (2N-2),...
Solve these 10 questions 11.Fill in the blanks. Suppose a cell at the end of S-phase...
Solve these 10 questions 11.Fill in the blanks. Suppose a cell at the end of S-phase has 48 chromatids. At the end of mitosis, each cell produced would have ______ chromosomes and ______ chromatids. 48, 96 24, 12 48, 48 24, 24 24, 48 12.Fill in the blanks. Suppose a cell at the beginning of meiosis has 36 chromosomes. This cell has ________ chromatids. At the end of meiosis, each of its "daughter cells" will have _________ chromosomes. 72, 18...
alagy and Early Develapment Leberatory 2. Identify Homologous Chromosomes and Sister Chromatids in appropriate phases. What...
alagy and Early Develapment Leberatory 2. Identify Homologous Chromosomes and Sister Chromatids in appropriate phases. What are homologous chromosomes? Are they present in all cells? If not, which cells lack homologous chromosomes? Are they present in all stages of mitosis? Are they present in all stages of Meiosis 1? Meiosis II? How do the terms haploid and diploid relate to the presence/absence of homologous chromosomes? What are sister chromatids? During what phase of the cell cycle do sister chromatids form?...
QUESTION 1 A cell divides by mitosis. The result is: A. diploid gametes. B. two identical...
QUESTION 1 A cell divides by mitosis. The result is: A. diploid gametes. B. two identical daughter cells. C. haploid gametes. D.four identical daughter cells. E. somatic cells with a unique collection of alleles. QUESTION 2 line of the DNA it did during prophase I. During metaphase Il in meiosis, a cell contains i A. twice as much B. 1/2 OC. 1/4 D.four times as much E. the same amount QUESTION 3 A cell spends the majority of its time...
Prophase Prometaphase Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Metaphase Anaphase Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Diploid or Haploid? 2x or 4x DNA content? Prophasel Metaphase 1 Diploid or iploid 1x 2 of 4 DNA content? Diploid or Haploid! 1x2x4x DNA content? Oo Anaphase Diploid or Haploid! 1x. 2x or 4x DNA...
Over Prophase 1 & Prophase 2 and independent Assortment in Prophase 1 only Sperm fertilizing erg in Telophase 2 and zygote formation after Cytokinesis 2 Question 3 1 pts Pg 99. Why is it essential that each gamete receive only one set of chromosomes, in other words. why must gametes be haploid? Because a haploid gamete can then fuse with a diploid egg or diploid sperm which promotes fertilization and development of a zygote. Because when gametes fuse in fertilization,...
Meiosis produces haploid gametes, how is the diploid number restored in diploid organisms? Sexual reproduction resulting in fertilization Reverse Meiosis O Production of sister chromatids during S phase Synapsis
9. The fusion of a and a _produces a zygote with 46 (2n) chromosome number. 10. During meiosis, the chromosome number: a) is doubled b) is reduced c) remains the same d) becomes diploid 11. Meiosis produces haploid (#) reproductive cells called _ 12. Name the 2 human gametes & tell their chromosome number. 13. Cells starting mitosis & meiosis begin with a (haploid or diploid) set of chromosomes. 14. How many times do cells divide during meiosis? 15. What...
When does the separation of homologous chromosomes occur? • O A. Meiosis 2 • O B. Before Meiosis • . C. Meiosis 1 D. After Meiosis Reset Selection If a cell has 24 pairs of chromosomes in its diploid state, how many chromosomes will it have after Meiosis 2? • • • • A. 24 B. 12 C. 48 D.6 Dan What structure is responsible for separating the chromosomes during Meiosis? A. Spindle Fibers B. Cytoplasm C. Metaphase plate •...
4. Complete the following table. Mitosis Meiosis MitosisMeiosis Synapsis (Yes or no Crossing over (When) Anaphase I results When do centromeres divide No. of divisions No. of cells resulting Anaphase II results No. of chromosomes in daughter cells Assume cell divisions are occurring on the arrows in this gen- eralized plant life cycle. Show where mitosis and meiosis occur. 5. Multicellular diploid plant Spore Multicellular haploid plant Starting with a diploid cell (A) that has 2 homologous chromo- somes (2N-2),...
alagy and Early Develapment Leberatory 2. Identify Homologous Chromosomes and Sister Chromatids in appropriate phases. What are homologous chromosomes? Are they present in all cells? If not, which cells lack homologous chromosomes? Are they present in all stages of mitosis? Are they present in all stages of Meiosis 1? Meiosis II? How do the terms haploid and diploid relate to the presence/absence of homologous chromosomes? What are sister chromatids? During what phase of the cell cycle do sister chromatids form?...
QUESTION 1 A cell divides by mitosis. The result is: A. diploid gametes. B. two identical daughter cells. C. haploid gametes. D.four identical daughter cells. E. somatic cells with a unique collection of alleles. QUESTION 2 line of the DNA it did during prophase I. During metaphase Il in meiosis, a cell contains i A. twice as much B. 1/2 OC. 1/4 D.four times as much E. the same amount QUESTION 3 A cell spends the majority of its time...
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