1.Where do the genes that determine an individual's traits come from? , An individual can be born with any genes, since genes are random.

B. Individuals grow genes specific to their environment.

C. Parents pass their genes down to their offspring.

D. Parents choose which genes their offspring have when each individual is born

2.How do genes determine an individual's traits
A. Genes directly lead to traits
B. Genes are random and don't lead to traits
C. Genes give organisms the ability to change their traits
D. Genes are instructions for making protein molecules and protein molecules determine traits

1. C

2. D

Explanation:

Parents pass down genes to there kids. They can pass down certain ones, like a gene for red hair.

Not every gene you get is instantly going to happen, if you get one brown hair gene and one red hair gene, you are going to have brown hair since it is a dominant trait.

1)  C. Parents pass their genes down to their offspring.

2)  D. Genes are instructions for making protein molecules and protein molecules determine traits

answer : one can design an experiment using a liquid and an additive that can be added to the liquid and observe the chemical changes in the reaction species.

one would need a beaker which is filled with a known amount of the liquid in which thermometer is placed to measure the temperature changes; after addition of the additive to the liquid solution one can note down the temperature change and find whether the reaction is endothermic or exothermic in nature. by subtracting the initial temperature value with the final temperature one can find the temperature changes.

various combinations of liquid and additive can be used. liquid in this case can be a known quantity of water and additives can be epsom salt or without epsom salt the experiment can be conducted to notice the changes. water and ice, hydrogen peroxide and dry yeast, vinegar and baking soda,etc.