« previous next »

Author Question: Polytene chromosomes of Drosophila salivary glands each consist of multiple iden (Read 641 times)

camila

  • Hero Member
  • *****
  • Posts: 705
on: Jun 23, 2013
Polytene chromosomes of Drosophila salivary glands each consist of multiple identical DNA strands that are aligned in parallel arrays. How could these arise?
A) replication followed by mitosis
B) replication without separation
C) meiosis followed by mitosis
D) fertilization by multiple sperm
E) special association with histone proteins


formula1

  • Hero Member
  • *****
  • Posts: 666
Reply #1 on: Jun 24, 2013
We did this yesterday, it's B.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question

camila

  • Hero Member
  • *****
  • Posts: 705
Reply #2 on: Jun 29, 2013
Thanks! It was right ;)


« previous next »
 

Did you know?

If you use artificial sweeteners, such as cyclamates, your eyes may be more sensitive to light. Other factors that will make your eyes more sensitive to light include use of antibiotics, oral contraceptives, hypertension medications, diuretics, and antidiabetic medications.

Did you know?

It is important to read food labels and choose foods with low cholesterol and saturated trans fat. You should limit saturated fat to no higher than 6% of daily calories.

Did you know?

The toxic levels for lithium carbonate are close to the therapeutic levels. Signs of toxicity include fine hand tremor, polyuria, mild thirst, nausea, general discomfort, diarrhea, vomiting, drowsiness, muscular weakness, lack of coordination, ataxia, giddiness, tinnitus, and blurred vision.

Did you know?

The cure for trichomoniasis is easy as long as the patient does not drink alcoholic beverages for 24 hours. Just a single dose of medication is needed to rid the body of the disease. However, without proper precautions, an individual may contract the disease repeatedly. In fact, most people develop trichomoniasis again within three months of their last treatment.

Did you know?

The Food and Drug Administration has approved Risperdal, an adult antipsychotic drug, for the symptomatic treatment of irritability in children and adolescents with autism. The approval is the first for the use of a drug to treat behaviors associated with autism in children. These behaviors are included under the general heading of irritability and include aggression, deliberate self-injury, and temper tantrums.

Glands Glands
Human mitotic metaphase chromosomes are identified by size, centromere location, and banding pattern Human mitotic metaphase chromosomes are identified by size, centromere location, and banding pattern
Deletion mapping of the Drosophila Notch (n) gene Deletion mapping of the Drosophila Notch (n) gene
Genetic complementation analysis of Drosophila eye color mutants Genetic complementation analysis of Drosophila eye color mutants
Resolution of the double Holliday junctions of homologous chromosomes Resolution of the double Holliday junctions of homologous chromosomes
Video: Dorsal Recumbent Position

For a complete list of videos, visit our video library