One of the Vicia Faba chromosomes has a nucleolar organizing region (NOR). What is another name...
One of the Vicia Faba chromosomes has a nucleolar organizing region (NOR). What is another name for the NOR? What type of metaphase chromosome has it? Describe it then discuss its composition and role in the cell.
Homework Answers
NOR are also known as secondary constrictions. Chromosome with secondary constriction is known as satellite chromosome ( It is Satellite Chromosome, must not be confused with satellite DNA). In a metaphase these chromosome show two constrictions one is the centromere and other at tip giving a knob like appearance. NOR have tandom repeats for ribosomal DNA genes. NOR are important for the formation of nucleolus.
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One of the Vicia Faba chromosomes has a nucleolar organizing
region (NOR). What is another name...
Would a cell that was missing the kinetochores on one of its chromosomes be able to...
Would a cell that was missing the kinetochores on one of its chromosomes be able to get past the metaphase checkpoint? No, because kinetochores are necessary for sister chromatids to be held together. No, because the spindle could no attach to that chromosome and pull it to the midline No, because cohesin on the chromosome could not dissolve Yes, because the kinetochores do not have any effect on the metaphase checkpoint.
If an animal has 8 different chromosomes what is the number of chromosomes in a Answer:...
If an animal has 8 different chromosomes what is the number of chromosomes in a Answer: HaploidDiploid 024. If an animal has 14 chromosomes (2n-28), without recombination, how many different gametes can this animal produce? (1 pt) A 14 8 282 274 D. 22 Q25. On the human Karyotype shown here...(6 pts) How many total chromosomes (2n?)? How many pairs of homologs? How many DNA molecules TOTAL? How many pairs of autosomes? Is this from a male or female? Describe...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes I,, Ib, Ila, and Ilb. Submetacentric chromosomes have their centro nere abou midway between the telomere and middle of the chromosome as shown. Chromosomes Ia and I, are homologues and chromosomes II, and Ilb are homologues. Allele R is located on the p arm (short arm) of chromosome of chromosome la, and allele r is located at the same position on chromosome lb. Allele...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are in a human somatic cell? 46 chromosomes 3 The term used to refer to this full complement of chromosomes is the 4 How many chromosomes are in human gametes? 5 This is referred to as the number 6 Wa chicken's skin cell has 78 chromosomes, how many chromosomes would the chicken's sperm cell have? 7 How can we distinguish the 23 types of chromosomes...
A male Drosophila from a wild-type stock is discovered to have only seven chromosomes, whereas normally...
A male Drosophila from a wild-type stock is discovered to have only seven chromosomes, whereas normally 2n = 8. Close examination reveals that one member of chromosome IV (the smallest chromosome) is attached to (translocated to) the distal end of chromosome II and is missing its centromere, thus accounting for the reduction in chromosome number. If this male mates with a female with a normal chromosome composition who is homozygous for the recessive chromosome IV mutation eyeless (ey), what chromosome...
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...
Consider an organism that has 2 pairs of homologous chromosomes. Draw one of the cells from...
Consider an organism that has 2 pairs of homologous chromosomes. Draw one of the cells from this organism as it would appear during late prophase I and during late metaphase I. What would happen to the gametes, if you treated the cell with Taxol, a drug the blocks spindle fiber formation immediately after meiosis I. Assume that the cell is still able to complete cytokinesis. Female armadillos always give birth to four offspring of the same sex. Suggest a mechanism...
15. The cell shown (alright) is a diploid 4) cell and it is in Gl of...
15. The cell shown (alright) is a diploid 4) cell and it is in Gl of the cell cycle. There are 3 different genes of interest. The loci for the Aa and Bb alleles are found on a single chromosome. The loci for the Ele alleles are found on a second chromosome. II w is the peofell? 2 points Take this cell to Metaphase 1 of Meiosis by properly replicating, and drawing, the chromosomes and their alleles. For now, do...
please help and thank you Materials Needed per class: 1 box of 24 microscope slides of...
please help and thank you
Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...
What is a diploid cell? One that has two copies of each chromosome – one from...
What is a diploid cell? One that has two copies of each chromosome – one from mom and one from dad. A cell that carries the mutation for Cystic Fibrosis. Another term for a sperm or egg cell. A cell that carries only one copy of the X chromosome
If an animal has 8 different chromosomes what is the number of chromosomes in a Answer: HaploidDiploid 024. If an animal has 14 chromosomes (2n-28), without recombination, how many different gametes can this animal produce? (1 pt) A 14 8 282 274 D. 22 Q25. On the human Karyotype shown here...(6 pts) How many total chromosomes (2n?)? How many pairs of homologs? How many DNA molecules TOTAL? How many pairs of autosomes? Is this from a male or female? Describe...
5. (16 pts.) A cell has two pairs of submetacentric chromosomes, which we wili cail chromosomes I,, Ib, Ila, and Ilb. Submetacentric chromosomes have their centro nere abou midway between the telomere and middle of the chromosome as shown. Chromosomes Ia and I, are homologues and chromosomes II, and Ilb are homologues. Allele R is located on the p arm (short arm) of chromosome of chromosome la, and allele r is located at the same position on chromosome lb. Allele...
Check Your Understanding 3.1 1 What are chromosomes made of? number 2 How many chromosomes are in a human somatic cell? 46 chromosomes 3 The term used to refer to this full complement of chromosomes is the 4 How many chromosomes are in human gametes? 5 This is referred to as the number 6 Wa chicken's skin cell has 78 chromosomes, how many chromosomes would the chicken's sperm cell have? 7 How can we distinguish the 23 types of chromosomes...
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...
Consider an organism that has 2 pairs of homologous chromosomes. Draw one of the cells from this organism as it would appear during late prophase I and during late metaphase I. What would happen to the gametes, if you treated the cell with Taxol, a drug the blocks spindle fiber formation immediately after meiosis I. Assume that the cell is still able to complete cytokinesis. Female armadillos always give birth to four offspring of the same sex. Suggest a mechanism...
15. The cell shown (alright) is a diploid 4) cell and it is in Gl of the cell cycle. There are 3 different genes of interest. The loci for the Aa and Bb alleles are found on a single chromosome. The loci for the Ele alleles are found on a second chromosome. II w is the peofell? 2 points Take this cell to Metaphase 1 of Meiosis by properly replicating, and drawing, the chromosomes and their alleles. For now, do...
please help and thank you
Materials Needed per class: 1 box of 24 microscope slides of meiosis 1 1 box of 24 microscope slides of meiosis 2 red and yellow popbead chromosome kits Objectives To become familiar with the process of meiosis and to be able to identify the principal phases of meiosis To understand how the process of meiosis is similar to mitosis and how it differs from mitosis Introduction The genetic information of a cell is encoded in...
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