This topic contains a solution. Click here to go to the answer
« previous next »

Author Question: What is the chromosomal abnormality associated with Down syndrome? a) an extra Y chromosome b) a ... (Read 39 times)

Tazate

  • Hero Member
  • *****
  • Posts: 532
on: Jun 22, 2018
What is the chromosomal abnormality associated with Down syndrome?
 
  a) an extra Y chromosome
  b) a broken branch on the Y chromosome
  c) three 21 chromosomes instead of two
  d) 24 rather than 23 pairs of chromosomes

Question 2

If only one twin has a certain disease, the twin pair is said to be
 
  a) fraternal.
  b) penetrant.
  c) karyotypic.
  d) discordant.


Related Topics

Need homework help now?

Ask unlimited questions for free

Ask a Question
Marked as best answer by a Subject Expert

thall411

  • Sr. Member
  • ****
  • Posts: 332
Reply #1 on: Jun 22, 2018
Answer to Question 1

c

Answer to Question 2

Sent you a PM please check your forum inbox. Thank you


Tazate

  • Member
  • Posts: 532
Reply 2 on: Jun 22, 2018
Great answer, keep it coming :)

marict

  • Member
  • Posts: 304
Reply 3 on: Yesterday
Thanks for the timely response, appreciate it

« previous next »
 

Did you know?

Calcitonin is a naturally occurring hormone. In women who are at least 5 years beyond menopause, it slows bone loss and increases spinal bone density.

Did you know?

Vaccines cause herd immunity. If the majority of people in a community have been vaccinated against a disease, an unvaccinated person is less likely to get the disease since others are less likely to become sick from it and spread the disease.

Did you know?

In the United States, congenital cytomegalovirus causes one child to become disabled almost every hour. CMV is the leading preventable viral cause of development disability in newborns. These disabilities include hearing or vision loss, and cerebral palsy.

Did you know?

Approximately one in three babies in the United States is now delivered by cesarean section. The number of cesarean sections in the United States has risen 46% since 1996.

Did you know?

Street names for barbiturates include reds, red devils, yellow jackets, blue heavens, Christmas trees, and rainbows. They are commonly referred to as downers.

Telomere sequences at the end of a human chromosome Telomere sequences at the end of a human chromosome
In Marfan syndrome, defective connective tissue causes the base of the aorta to enlarge, and potenti In Marfan syndrome, defective connective tissue causes the base of the aorta to enlarge, and potenti
A gene map for chromosome 12 from the NCBI database Map Viewer A gene map for chromosome 12 from the NCBI database Map Viewer
Chromosomal involvement and translocation in familial Down syndrome Chromosomal involvement and translocation in familial Down syndrome
Interphase chromosome territories Interphase chromosome territories
Video: Enzyme-Catalyzed Reactions

For a complete list of videos, visit our video library