Homework Answers
Question-1
Answers: If there is no crossing over there will not be any transfer of genetic material
a. possible combinations of chromosomes will be present in daughter cells following mitosis
C1/C2, M1/M2, S1/S2
b.possible combinations of chromosomes will be present in the first meiotic metaphase (normally the pairs of homologous chromosomes (the bivalents): But due to absence of crossing over, the possible chromosomes are
C1/C2, M1/M2, S1/S2
c. possible combinations of chromosomes will be present haploid cells following both divisions of meiosis:
Independent assortment- result in total 8 types of combinations
C1/M1/S1, C1/M1/S2, C2/M1/S1, C2/M2/S2, C1/M2/S1, C2/M1/S2, C1/M2/S2, C2/M2/S1. The second division of meiosis creates daughter cells from the chromosomes. These are genetically the same material or a copy of the chromosome created after the first meiosis.
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A diploid cell contains three pairs of homologous chromosomes designated C1 and C2, Ml and M2,...
A cell undergoing meiosis has four pairs of homologous chromosomes. How many different combinations of maternal...
A cell undergoing meiosis has four pairs of homologous chromosomes. How many different combinations of maternal and paternal chromosomes are possible within the daughter cells that form? (Do not consider crossing over in your answer.) a.16 b. 8 c. 4 d. 2
Fill in the blank: 11. A cell with a diploid number of 20, undergoes meiosis. This...
Fill in the blank: 11. A cell with a diploid number of 20, undergoes meiosis. This will produce daughter cells, each with __ _ chromosomes. 12. Crossing over occurs during this phase: 13. Tetrads line up along the equator during this phase: 14. At the end of meiosis I, daughter cells are created. These daughter cells are ( diploid | haploid ). 15. Meiosis creates what type of cell: Fill in the Blank with the proper phase of Meiosis (Interphase...
2. A diploid cell contains two pairs of chromosomes, which we will call 1 and 2....
2. A diploid cell contains two pairs of chromosomes, which we will call 1 and 2. Assume chromosome! is clearly larger than chromosome 2. Each chromosome pair contains a maternal and a paternal member (e.g. 1 and 1 & 2 and 2"). An allele called G is localized to 1" whereas an allele called g is on chromosome 1P. Allele R is localized to 2m whereas alleler is localized to 2. Using these designations and clearly drawn and labeled chromosomes,...
MULTIPLE CHOICE: Which describes the zygote cell after fertilization? a) diploid with 23 pairs of homologous...
MULTIPLE CHOICE: Which describes the zygote cell after fertilization? a) diploid with 23 pairs of homologous chromosomes b) diploid with 23 non-homologous chromosomes c) haploid with 23 pairs of homologous chromosomes d) haploid with 23 autosomal chromosomes e) diplohaplontic with 23 pairs of autosomal chromosomes Which is the best example of a genotype? a) a short-haired cat b) TT c) physical appearance of an organism d) frequency of genes e) the length of stem in pea plants Which event occurs...
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 •...
A diploid cell contains 6 pairs of chromosomes, as pictured below. Remember that chromosome 1 is...
A diploid cell contains 6 pairs of chromosomes, as pictured below. Remember that chromosome 1 is the longest, chromosome 2 is the next longest, then 3, etc. The pairs are numbered from longest to shortest by convention. If this cell undergoes meiosis, which of the following pictures shows the chromosomes the daughter cell would be expected to receive? All of these are possible outcomes of meiosis.
A somatic cell from a diploid species with 2n=4 (4 chromosomes or two sets of homologous...
A somatic cell from a diploid species with 2n=4 (4 chromosomes or two sets of homologous chromosomes) is undergoing mitosis. Draw the cell and chromosomes during G1, during G2, during metaphase, and the two cells that result from mitosis at the end. Label each stage in your drawing, and also label sister chromatids and homologous chromosomes as appropriate.
Question 2: The Atlas blue butterfly has 224 homologous pairs of chromosomes. Each pair consists of...
Question 2: The Atlas blue butterfly has 224 homologous pairs of chromosomes. Each pair consists of one chromosome from the butterfly's mother and one from its father. A. Assuming no crossing over, what is the probability that a sperm this butterfly makes has all of the chromosomes from the butterfly's own father? Why? (You do not need to calculate out this number- a number with an exponent is fine.) (roughly 3-4 sentences) B. How many chromosome 17's does this butterfly...
underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and...
underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and and how many chromosomes will they contain? A) 4 cells, each with 20 chromosomes B) 4 cells, each with 10 chromosomes C) 2 cells, each with 10 chromosomes D) 2 cells, each with 20 chromosomes Answer: 13) Crossing over occurs during which stage of meiosis? A) telophase I B) metaphase II C) anaphase II D) prophase II E) prophase I Answer: 14) Which of...
Compare mitosis and meiosis by filling in the chart below. Meiosis Mitosis Characteristic Are daughter cells...
Compare mitosis and meiosis by filling in the chart below. Meiosis Mitosis Characteristic Are daughter cells genetically identical or different from the parent? Involves how many cell divisions? Produces how many daughter cells? Produces haploid or diploid cells? Produces what type of cell? Sister chromatids or homologous chromosomes separate? What are the functions of the cells produced? 05 Answer the following Explain how segregation of chromosomes during meiosis can generate four types of gametes (assume four chromosomes, two homologous pairs)...
Fill in the blank: 11. A cell with a diploid number of 20, undergoes meiosis. This will produce daughter cells, each with __ _ chromosomes. 12. Crossing over occurs during this phase: 13. Tetrads line up along the equator during this phase: 14. At the end of meiosis I, daughter cells are created. These daughter cells are ( diploid | haploid ). 15. Meiosis creates what type of cell: Fill in the Blank with the proper phase of Meiosis (Interphase...
2. A diploid cell contains two pairs of chromosomes, which we will call 1 and 2. Assume chromosome! is clearly larger than chromosome 2. Each chromosome pair contains a maternal and a paternal member (e.g. 1 and 1 & 2 and 2"). An allele called G is localized to 1" whereas an allele called g is on chromosome 1P. Allele R is localized to 2m whereas alleler is localized to 2. Using these designations and clearly drawn and labeled chromosomes,...
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 •...
A diploid cell contains 6 pairs of chromosomes, as pictured below. Remember that chromosome 1 is the longest, chromosome 2 is the next longest, then 3, etc. The pairs are numbered from longest to shortest by convention. If this cell undergoes meiosis, which of the following pictures shows the chromosomes the daughter cell would be expected to receive? All of these are possible outcomes of meiosis.
Question 2: The Atlas blue butterfly has 224 homologous pairs of chromosomes. Each pair consists of one chromosome from the butterfly's mother and one from its father. A. Assuming no crossing over, what is the probability that a sperm this butterfly makes has all of the chromosomes from the butterfly's own father? Why? (You do not need to calculate out this number- a number with an exponent is fine.) (roughly 3-4 sentences) B. How many chromosome 17's does this butterfly...
underers meiosis, how many cells will result, 12) If a eukaryotic cell has 20 chromosomes and and how many chromosomes will they contain? A) 4 cells, each with 20 chromosomes B) 4 cells, each with 10 chromosomes C) 2 cells, each with 10 chromosomes D) 2 cells, each with 20 chromosomes Answer: 13) Crossing over occurs during which stage of meiosis? A) telophase I B) metaphase II C) anaphase II D) prophase II E) prophase I Answer: 14) Which of...
Compare mitosis and meiosis by filling in the chart below. Meiosis Mitosis Characteristic Are daughter cells genetically identical or different from the parent? Involves how many cell divisions? Produces how many daughter cells? Produces haploid or diploid cells? Produces what type of cell? Sister chromatids or homologous chromosomes separate? What are the functions of the cells produced? 05 Answer the following Explain how segregation of chromosomes during meiosis can generate four types of gametes (assume four chromosomes, two homologous pairs)...
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