This law explains that the pair of alleles segregate from each other during meiosis cell division (gamete formation) so that only one allele will be present in each gamete. ... Every organism inherits two alleles for each trait. The two alleles of a pair are different, i.e., one is dominant and one is recessive.
I have to say airborne infections. If the infection is airborne it can travel and infect many people more quickly and wide spread.
Answer:
<u>A common element among all the river valley civilizations was irrigation systems that moved water to crops and settlements</u>
Explanation:
- <u>River Valley civilizations where the civilizations that were found on the banks of the river like the Mesopotamia ,Indus valley civilization.</u>
- <u>These civilization where agriculture based civilization as they depended on river for drinking water and irrigational activities</u>
The answer is B- Embryological Development.
