Answer:
1. are heterozygous for the disease.
Explanation:
<em>Since the disease causes the death of chicks before hatching, it means that those with the disease cannot be found in the population. In order for the allele of the disease to be passed from generation to generation, there must be parent birds that are carrying the disease in heterozygous state.</em>
Option 1 is the correct option.
Answer:
Tell the younger student that organs are singular objects and systems are a group of organs that work together to perform certain jobs.
Explanation:
Organs are singular units that play a part of human survival. (Ex. the heart cleans the blood and pushes through your veins)
Systems are a group of the singular units that work together to perform a certain function.
(Ex. Lungs, heart, veins and arteries make up the circulatory system which transports oxygen, blood, and nutrients through out your body)
Magnets attracts or repel iron nails
