Genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).
Answer:
Proliferative phase
Explanation:
Uterine cycle is part of the menstrual cycle in which changes occur in the reproductve female system in order to prepare female on possible pregnacy. Uterine cycle isdivided into three phases:
- Menstrual phase-characterized by the process of menstruation
- Proliferative phase-estogen causes the production of new endomethrium layer (thickening of the endomethrium)
- Secretory phase-characterized by the production of progesteron which prepares endomethrium for the implementation.
Answer:
Reduce, Reuse, Recycle and Recover are the four R’s.
REDUCE: This means to use the environmental resources in a sustainable way and prevent waste.
REUSE: This means we can use the same thing over again.
RECYCLE: This means things are processed and can get turned into some other product that they can be used again.
RECOVER: This means a safe and eco-friendly alternative should be used in place of a thing.
Most heterotrophs are chemoorganoheterotrophs<span> (or simply </span>organotrophs<span>) who utilize organic compounds both as a carbon source and an energy source. The term "heterotroph" very often refers to chemoorganoheterotrophs. Heterotrophs function as consumers in </span>food chains: they obtain organic carbon by eating autotrophs or other heterotrophs. <span>Most </span>opisthokonts<span> and </span>prokaryotes<span> are heterotrophic</span>
If you remove one light bulb in a series, the other will go out because a series only goes through one path of electricity
