The
answer is B cell lineage. There two stages of B cells Lineage first is the early pro b
cell -D and J rearrangement and the late Pro B cell - V-DJ rearrangement. These
rearrangements refer to the Heavy chain and activation of KIT causes the B-cell
to proliferate.
I think DNA is the answer
Answer:
projections that help them move
Explanation:
Euglena and paramecium both belong to the Kingdom Protista. They are very minute single cellular organisms but have many differences among them. Paramecium is more similar to animals in many of its characteristics while Euglena is more similar to plants in its characteristics. This is because Euglena just like plants can make their own foods through chloroplast while paramecium just like animals cannot make own food.
However what is common in both of these are projections that help them move
. Paramecium have projections called cilia around the whole body while Euglena has a whip like flagella which helps it to move.
Hope it help!
Answer:
Mechanical isolation
Explanation:
mechanical isolation is a form of prezygotic reproductive barrier, whereby similar species organisms become isolated and unable to successfully interbreed with each other to form zygote, as a result of incompatibility of their reproductive organ or structure, which prevents them from copulating. As a result of this, both species become separated as there is no gene flow between both.
The two species of juniper can be said to be kept separate by <em>mechanical isolation</em>, due to the differences and incompatibility of their reproductive structure.
