Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

thecity

what is a trisomy 21?

  • one year ago
  • one year ago

  • This Question is Open
  1. mud116
    Best Response
    You've already chosen the best response.
    Medals 2

    trisomy 21 is actually more commonly known as down syndrome

    • one year ago
  2. thecity
    Best Response
    You've already chosen the best response.
    Medals 0

    how many double chromosomes are there?

    • one year ago
  3. mud116
    Best Response
    You've already chosen the best response.
    Medals 2

    does that answer your question?

    • one year ago
  4. mud116
    Best Response
    You've already chosen the best response.
    Medals 2

    umm lemme see

    • one year ago
  5. mud116
    Best Response
    You've already chosen the best response.
    Medals 2

    i do not know that but i don know that there is an extra 21'st chromsome hence the name trisomy 21

    • one year ago
  6. thecity
    Best Response
    You've already chosen the best response.
    Medals 0

    oh okay. thanks. normal humans have 46 double chromosomes right?

    • one year ago
  7. mud116
    Best Response
    You've already chosen the best response.
    Medals 2

    yes

    • one year ago
  8. thecity
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks so much!

    • one year ago
  9. mud116
    Best Response
    You've already chosen the best response.
    Medals 2

    no problem

    • one year ago
  10. ebaxter01
    Best Response
    You've already chosen the best response.
    Medals 0

    Please note that it's "Down's syndrome" because it was described first by a physician named JL Down.

    • one year ago
  11. Karrie96
    Best Response
    You've already chosen the best response.
    Medals 0

    Ok, so basically trisomy 21 is another name for Down's syndrome. As you've already said, human's normally have 46 chromosomes, or twenty-three pairs, which they are often divided into, because each pair looks similar. I'll include a picture. Anyways, normally each pair has 2, but in the event that there is a mutation, then there can be a monomy or a trisomy. A monomy is where there is only one of the two chromosomes in the pair, or a trisomy is an extra chromosome. So that's about it, hope the background info helps. :D

    • one year ago
  12. thecity
    Best Response
    You've already chosen the best response.
    Medals 0

    do you know how many double chromosomes there are? i know there are 23 homologous pairs

    • one year ago
  13. Karrie96
    Best Response
    You've already chosen the best response.
    Medals 0

    Here's a good pic to show you...

    • one year ago
    1 Attachment
    • Attachments:

See more questions >>>

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.