Answer:
In explanation.
Explanation:
Gregor Mendel formulated his laws of heredity in 1860 before...
-The structure of DNA was known, the existence of chromosomes and genes were known and the mechanisms which create variation in offspring were known.
If your quiz is like this:
Question: Gregor Mendel formulated his laws of heredity in 1860 before ________.
A). The structure of DNA was known.
B). The existence of chromosomes and genes was known.
C). The mechanisms which create variation in offspring were known.
D). All of the choices above are correct.
E). An understanding of mitosis and meiosis was known.
The correct answer is the "D" because yes after Gregor Mendel formulated his laws of heredity in 1860 the structure of DNA was known, the existence of chromosomes and genes were known and the mechanisms which create variation in offspring were known. (Referring that A, B, and C are correct).
Hope this helps.
The answer is letter B hope this help plz give me brainliest
The answer is C.<span>saguaro cactus and sagebrush both needing water in the desert.
they are competing for water D is parasitism A is </span><span>a commensal relationship</span><span> and B is mutualism </span>
Answer:
The kinetochore of the chromosomes
Explanation:
<em>What could be damaged that is hindering the spindle fibers from attaching to the chromosomes are the kinetochores of the chromosomes.</em>
At the metaphase stage of the cell division, the chromosomes align at the equator of the cell and the spindle fibers engage each chromosome at a region known as the kinetochore.
The kinetochore is made up of complex proteins and lies around the centromere region of the chromosome. The microtubules of the spindle fibers attach to this region during the metaphase stage.
<u>If the kinetochore is damaged, it means the spindle fiber will not be able to attach to the chromosome. </u>
