Pls help What makes it harder to breathe during an asthma attack?
1.blood clots in the trachea
2.excess fluid in the air savs
3.swelling and excess in the airways
4.infection in the lungs

The diagram shows the results when two parents are crossed. the letters represent alleles for a trait that is controlled by three different genes. which best describes this inheritance pattern? multiple allele because a trait is controlled by three different genes polygenic because the offspring have alleles from both parents multiple allele because the offspring have alleles from both parents polygenic because a trait is controlled by three different genes