1. Home
  2. Concepts of biology_biol 101
  3. Unit 2. cell division and
  4. Patterns of inheritance
  5. Extensions of the laws of

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

<< Chapter < Page
  Concepts of biology_biol 101     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_biol 101 dacc. OpenStax CNX. Jan 13, 2014 Download for free at http://legacy.cnx.org/content/col11614/1.1
Google Play and the Google Play logo are trademarks of Google Inc.

Notification Switch

Would you like to follow the 'Concepts of biology_biol 101 dacc' conversation and receive update notifications?

Ask