The answer is false
When the cells are differentiating in the embryo, they retain the same genetic material. However, certain genes in the differentiating cells are silenced using protein complexes called histones. This makes the genes inaccessible to RNA. Therefore, the process of transcription required in the expression of genes is restricted.
Heterozygous means the two alleles are different. So the probability is 1/2 or 50%
They all keep our econemy healthy and clean.
Diamond Abrasive and Mineral Polisher is the most useful as grains on sandpaper. According to Merriam dictionary diamond abrasive are powdered or crushed diamond used as an abrasive also called diamond powder. While mineral polisher is is a mineral that make or finish work piece through rubbing.
It is d, a substance that participates in a chemical reaction. You can also tell it just by looking at the stem of the term :)