1 Heterozygous: means you have one copy of either the 677 mutation, or the 1298 mutation, plus a normal one from the other parent. 2  Compound Heterozygous: means you have one copy of the 677 mutation from one parent and one copy of the 1298 mutation from the other parent.ore than one mutation of the MTHFR gene. Genes are passed down by your mother and your father. Most literature states there are a good 40-50 different mutations of this important gene which could be passed down by one, or both or your parents.
The metric measure units of length are based on the meter. 1  The millimeter (mm) is the smallest metric measure of length and equals 1/1000 of a meter. 2  The centimeter (cm) is the next largest unit of length and equals 1/100 of a meter. 3  The decimeter (dm) is the next largest unit of length and equals 1/10 of a meter. The meter (m) is the next largest unit of length ; The dekameter (dam) is the next largest unit of length and equals 10 meters; The hectometer (hm) is the next largest unit of length and equals 100 meters; The kilometer (km) is the largest unit of length and equals 1000 meters.
What are the standard units of length, mass, volume, and temperature in the metric (SI) system? Meter, gram, liter, degrees Celsius/ Kelvins, second 2. Why is the metric system called a decimal system of measurement? The metric system is a decimal system in which measurements of each type are related by factors of 10.