« previous next »

Author Question: What usually causes Down syndrome? A. Maternal infection during early pregnancy B. Fertilization ... (Read 80 times)

Arii_bell

  • Hero Member
  • *****
  • Posts: 596
on: Jun 25, 2018
What usually causes Down syndrome?
 
  A. Maternal infection during early pregnancy
  B. Fertilization of an ovum containing an abnormal number of chromosomes
  C. An interaction of hereditary and environmental factors
  D. An abnormal gene transmitted by Mendelian inheritance

Question 2

A __________ is a set of HLA genes on one chromosome.
 
  A. karyotype
  B. haplotype
  C. plasmid
  D. polar body


nmyers

  • Sr. Member
  • ****
  • Posts: 336
Reply #1 on: Jun 25, 2018
Answer to Question 1

B

Answer to Question 2

B


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
« previous next »
 

Did you know?

Elderly adults are at greatest risk of stroke and myocardial infarction and have the most to gain from prophylaxis. Patients ages 60 to 80 years with blood pressures above 160/90 mm Hg should benefit from antihypertensive treatment.

Did you know?

According to the American College of Allergy, Asthma & Immunology, more than 50 million Americans have some kind of food allergy. Food allergies affect between 4 and 6% of children, and 4% of adults, according to the CDC. The most common food allergies include shellfish, peanuts, walnuts, fish, eggs, milk, and soy.

Did you know?

Automated pill dispensing systems have alarms to alert patients when the correct dosing time has arrived. Most systems work with many varieties of medications, so patients who are taking a variety of drugs can still be in control of their dose regimen.

Did you know?

Signs and symptoms that may signify an eye tumor include general blurred vision, bulging eye(s), double vision, a sensation of a foreign body in the eye(s), iris defects, limited ability to move the eyelid(s), limited ability to move the eye(s), pain or discomfort in or around the eyes or eyelids, red or pink eyes, white or cloud spots on the eye(s), colored spots on the eyelid(s), swelling around the eyes, swollen eyelid(s), and general vision loss.

Did you know?

The term pharmacology is derived from the Greek words pharmakon("claim, medicine, poison, or remedy") and logos ("study").

Early divisions in the animal phylogeny. Early divisions in the animal phylogeny.
Impetigo, a highly contagious bacterial infection. Impetigo, a highly contagious bacterial infection.
Nursing care plan - risk for infection Nursing care plan - risk for infection
Early claims of relieving headaches with Bromo-Seltzer Early claims of relieving headaches with Bromo-Seltzer
Polyps, or abnormal growths, on the lining of the large intestine may indicate early stages of colon Polyps, or abnormal growths, on the lining of the large intestine may indicate early stages of colon
Recommended Weight Gain during Pregnancy Recommended Weight Gain during Pregnancy
Video: X chromosome inactivation in calico cats

For a complete list of videos, visit our video library