Even though the light dependent reactions of photosynthesis are not affected by a change in temperature, the light independent reactions of photosynthesis can be dependent on temperature. They are reactions of enzymes. As the enzymes approach their optimum temperatures the rate increases.
While mapping the motor cortex, researchers Foerster and Penfield found that body areas requiring the greatest control occupied the greatest amount of cortical space
The majority of the afferent fibres that enter each region of the cerebral cortex come from a single thalamic projection nucleus. This thalamocortical projection is topographically organised so that discrete thalamic volumes project to discrete fields in the cortex, while continuous thalamic volumes project to a continuous region in the cortex. A point-to-point projection could be thought of in this respect, however this oversimplification ignores the mutual overlap of thalamic fibres inside their "modular" cortical arborization zones . Because the cerebral cortex is a two-dimensional surface and the thalamus is a three-dimensional body, the topographical depiction of the thalamic projection nuclei over the cerebral cortex is a topological problem.
Hence, Foerster and Penfield found that body areas requiring the greatest control occupied the greatest amount of cortical space.
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(b)haploid cells
(c)plant cells
(d)animal cells
Answer:
with no doubt I think the answer is diploid itdoes not access meiosis at all
Answer:
haploid cells
Explanation:
b. False
Answer:
B. False
Explanation:
Life history characteristics and survivorship patterns within a species are pre-set but may be changed according to the changes in environmental conditions needed for growth and reproduction. Allocation of energy to reproduction or other processes varies according to food availability, temperature, rainfall, etc.
Abundant resource availability favors the production of a large number of smaller offspring while limited resources make a population to produce a small number of larger progeny to increase the survival rate.
Example: Clutch size in birds is adjusted to obtain the maximum survival of progeny.
b. p=0.725.q = 0.275; P=0.06. H=0.56, Q=0.51
c. p=0.4.q = 0.6: P=0.12. H=0.56, Q=0.32
d. p=0.725.q = 0.275: P=0.34. H=0.57. Q=0.09
Answer:
a. p=0.725, q = 0.275: P=0.51, H=0.43, Q=0.06
Explanation:
Let state our given parameters from the question:
Frequencies of coat color genes at the C locus for population 1 are .85 for C
This implies that the Allelic frequency C for population p1 =0.85
Frequencies of coat color genes at the c locus for population 1 are .15 for c
This implies that the Allelic frequency c for population q1 = 0.15
Frequencies for Care .6 i.e p2= 0.6
Frequencies for care .4 i.e, let that be q2= 0.4
The table below shows a diagrammatic representation of the above expression:
Alllelic Frequency C c
Population 1 (p1) 0.85 (q1) 0.15
Population 2 (p2) 0.6 (q2) 0.4
Now, from above: let think of the table as a punnet square and then cross it together;
(p1) = 0.85 (q1) = 0.15
p2 = 0.6 p1p2 p2q1
= 0.6 × 0.85 = 0.15 × 0.6
= 0.51 (P) = 0.09 (H)
q2 = 0.4 p1q2 q1p2
= 0.85 × 0.4 = 0.4 × 0.15
=0.34 (H) = 0.06 (Q)
From the above table, the heterozygous are represented by (H)
∴ Frequency of heterozygous can be calculated as:
= 0.09 + 0.34
= 0.43
Thus, we can conclude that the progenyF1 genotypic frequencies are:
P= 0.51
H= 0.43
Q= 0.06
Now, let us calculate the allelic frequencies, p and q in F1
p = P + 1/2 × (H)
= 0.51 + (1/2 × 0.43)
= 0.51 + 0.215
= 0.725
q =Q + 1/2× (H)
= 0.06 + (1/2 × 0.43)
= 0.06 × 0.215
= 0.275
Hence, p=0.725, q = 0.275: P=0.51, H=0.43, Q=0.06 , This makes option a the correct answer.
B. desmosomes
C. peroxisomes
D. extracellular matrix
E. gap junctions
Answer:
E
Explanation:
Gap junctions in animals, like plasmodesmata in plants, connect the cytoplasm of two cells through dedicated and regulated channels. A gap junction is made of two hemichannels connected together leaving a channel that is 2-4 nm across -tranversing the two cells' cell membranes. The gap junctions allow for the cells to signal each other through allowing exchange of ions and other moelcules. One significance of gap junction is in enhancing communication between cells in the development of tissues and embryo.
Plasmodesmata in plant cells are most similar in function to gap junctions in animal cells.
Plasmodesmata are channels that connect plant cells and allow for the exchange of various materials, including nutrients and signaling molecules. They are most similar in function to gap junctions in animal cells. Gap junctions are specialized channels that connect neighboring animal cells, allowing for the direct transfer of small molecules and ions.
Like plasmodesmata, gap junctions play a crucial role in cell-cell communication and coordination within tissues. They facilitate the rapid passage of substances, such as ions and small metabolites, between adjacent cells, allowing for coordinated responses and sharing of resources.
Therefore, the answer to this question is E. gap junctions.
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