1. Home
  2. Concepts of biology for the
  3. Unit 2. cell division and
  4. Patterns of inheritance
  5. Extensions of the laws of

7.3 Extensions of the laws of inheritance  (Page 7/19)

<< Chapter < Page
  Concepts of biology for the     Page 7 / 19
Chapter >> Page >
7 / 19  The ABO blood groups in humans are expressed as the I A , I B , and i alleles. The I A allele encodes the A blood group antigen, I B encodes B, and i encodes O. Both A and B are dominant to O. If a heterozygous blood type A parent ( I A i ) and a heterozygous blood type B parent ( I B i ) mate, one quarter of their offspring are expected to have the AB blood type ( I A I B ) in which both antigens are expressed equally. Therefore, ABO blood groups are an example of:
A  multiple alleles and incomplete dominance
B  codominance and incomplete dominance
C  incomplete dominance only
D  multiple alleles and codominance
<< Chapter < Page Page > Chapter >>
Practice MCQ 4 FlashCards 2 Key Terms 8

Read also:

Get Jobilize Job Search Mobile App in your pocket Now!

Get it on Google Play Download on the App Store Now




Source:  OpenStax, Concepts of biology for the university of georgia. OpenStax CNX. Aug 09, 2013 Download for free at http://legacy.cnx.org/content/col11520/1.5
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Concepts of biology for the university of georgia' conversation and receive update notifications?

Ask