(B. Separation and divorce
Is a really big burden on families world wide. Other answers have no effect compared to the emotional weight of losing a family member.
Nerve impulses are caused by Potassium (K+) and Sodium (Na+) ions that are located inside and outside of the cell. The structure of the cell membrane is permeable to Potassium but are highly impermeable to Sodium ions. These impulses are transmitted from one nerve cell to the other in very fast series.
<span>a.
</span>The frequency of the dominant allele: ___0.4______
<span>b.
</span>The frequency of the recessive allele: ____0.6_____
<span>c.
</span>The percentage of mice that are homozygous
dominant: __16%_______
<span>d.
</span> The
percentage of mice that are heterozygous: _48%________
<span>e.
</span>The percentage of mice that are homozygous
recessive: __36%_______
Let us assign the dominant allele (that of brown hair) letter R
while
We assign the recessive
allele (that of white hair) letter r
We then note down the
Hardy-Weinburg equation p2 + 2pq + q2 = 1
Brown fur population (p2
+ 2pq) = 64% = 0.64
White fur population (q2) = 36% = 0.36
Then we also remember that the frequencies of both allele
add up to 1 (p + q = 1);
Therefore q = ü.36
= 0.6
P = 1 – q = 1 – 0.6 = 0.4
The heterozygous population will be 2*0.6*0.4 = 0.48 = 48%
Homozygous domain population will therefore be (64% - 48%) =
16%
Answer:
The spindle, shown in figure below, consists of fibers made of microtubules. the spindle starts to form during prophase of mitosis kinetochores on the spindle attach to the centromeres of sister chromatids.
Explanation: Chromosomes line up at the metaphase plate under tension from the mitotic spindle.
Answer:
D and B
Explanation:
it is hard to explain but
Xylem is responsible for the transport of water and dissolved ions
The phloem is made of companion cells that form to connect pipes
