Which best describes alleles? A
Alleles are the combination of two dominant genes.

B
Alleles are a mutation that occurs during transcription.

C
Alleles are only the physical appearance of an organism.

D
Alleles are the available forms of genes passed to offspring.

c

Explanation:

answer: although many types of viruses can cause a common cold, rhinoviruses are the most common culprit. a cold virus enters your body through your mouth, eyes or nose. the virus can spread through droplets in the air when someone who is sick coughs, sneezes or talks. theres your answer

explanation: