Centromeres split apart during anaphase.
spindle fibers pull the to sister chromatids apart.
Answer:
The fusion of a egg and a sperm produces a zygote with 46 (2n) chromosome number.
Unfortunately this question is incomplete as it is a multiple choice question. The following options are provided:
<span>A) body cavity between body wall and digestive system
B) number of embryonic tissue layers
C) type of body symmetry
D) presence of Hox genes
E) degree of cephalization
The answer is D: presence of Hox genes
</span>
Hox genes are a group of genes that determine the basic structure and orientation of animals.
Answer:
<h2>
The Nucleus.</h2>
Explanation:
The structure most necessary for a mitochondria to produce new cells is the nucleus.
The nucleus is a very specialized structure that occurs in most cells including the mitochondria.
It is a membrane bound organelle that contains genetic materials which is the DNA of all eukaryotic organisms(multicellular organisms)
It plays important functions such as:
1. Primarily an information center of the cell
2.Metabolism roles
3. Growth and production of new molecules in the mitochondria(mitochondrial bio-genesis).
You need two recessive alleles (xx). If even one dominant allele is present, the dominant trait will show (Xx or XX will both result in the dominant trait showing). That’s why they’re called dominant traits, because they overpower the recessive traits. In order for a recessive trait to show you must have two recessive alleles.
