If a person has a dominant gene and a recessive gene for a certain trait which will be expressed

The dominant gene will be expressed

Explanation:

Recessive genes are only expressed when you have two recessive genes and no dominant.

the correct answer is option b

behavioral response need communication and thus co-ordination at several levels such as interaction among cells, organ system and the entire organism.

behavioral response produces both internal and environmental stimulus.

regents of the university of california v. bakke, 438 u.s. 265 (1978), was a landmark decision by the supreme court of the united states. it upheld affirmative action, allowing race to be one of several factors in college admission policy.