<span>This barrier is known as reproductive isolation and and generally occurs when two species have incompatible genitalia which are unable to function together. It can also occur when the sperm of the male species is unable to be fertilized by the female, regardless of genital compatibility.</span>
9.8 x 0.0001= .00098 Newtons
weight = mass (kg) x gravity
I believe it's "pollen".
When the pollen grains are washed down into lakes/rivers, scientists can take a sample of the sediment layers and see what plants were growing at that time. They can then make inferences about the climate and how that affected the plants growing there.
Hope this helps!
The above statement is true.
Heme iron is found only in meat, poultry, seafood, and fish, so heme iron is the type of iron that comes from animal proteins in our diet. While the non-heme iron, by contrast, is found in plant based foods like grains, beans, vegetables, fruits, nuts, and seeds. However, it is also found in animal products such as eggs or milk/dairy and it also comprises more than half the iron contained in animal meat.
The answer is true.
DNA methylation is a process by which methyl groups are added to the DNA, more precisely to its nucleotides adenine or cytosine (they are methylated) via enzymes called DNA methyltransferases. This process as a result can change the activity of a DNA. For example, if DNA of gene promoter is methylated gene transcription is repressed. The opposite process is DNA demethylation.
So, DNA methylation is an epigenetic mechanism meaning that gene activity can be changed and inherited that way, but the sequence of DNA remains the same.
