Answer:
An individual skeletal muscle may be made up of hundreds, or even thousands, of muscle fibers bundled together and wrapped in a connective tissue covering. Each muscle is surrounded by a connective tissue sheath called the epimysium. Fascia, connective tissue outside the epimysium, surrounds and separates the muscles.
Explanation:
Answer:
a) p=0.665
b) q=0.335
c) 2pq=0.445
d) (0.665^2)+(0.335^2)+(2*0.665*0.335)=1
Explanation:
For solve this exercise I will use the Hardy-Weinberg principle. We have the following:
a) and b)
number of purple flowers=142
number of white flowers=18
total number of flowers=160
frequency of white flowers=q^2=18/160=0.112
q=0.335
if
p+q=1
Clearing p:
p=1-0.335=0.665
c) the heterozygous is 2pq:
frequency of heterozygous allele: 2pq=2*0.665*0.335=0.445
d) p^2+2pq+q^2=1
(0.665^2)+(0.335^2)+(2*0.665*0.335)=1
The vascular cambium produces secondary phloem and xylem tissue.
<span>Vascular cambium, a plant tissue located between the xylem and the phloem in
the stem of a vascular plant. It is also the source of both secondary xylem growth
and the secondary phloem growth. Vascular
cambium is usually found on dicots and gymnosperms not on monocots which
usually lack secondary growth. It does not transport water, dissolved food or
minerals by plants. </span>
<span>Vascular cambia are cylinders of unspecialized meristem cells which
divide to make new cells which
specialize to form secondary vascular tissues.</span>
This control is called negative feedback. Mechanism of negative feedback. Each metabolic reaction or process is regulated by several enzymes. These enzymes control the rate of these reactions and thus are fundamental in maintaining homeostasis. In a negative-feedback pathways, the end product of a pathway binds to the allosteric site of the first enzyme, closing its active site and blocking the rest of the reactions.
