A cross-sectional view of a log shows a concentric pattern. Which part of the stem gives rise to this pattern?
B. Xylem
as it contribute for most of a tree's growth in diameter.
Im pretty sure the answer is <span>plates.. Hope this helps ::))</span>
Answer:
980,100
Explanation:
let the recessive condition (aa) be represented as q² which is the genotypic frequency = 100/1,000,000 = 0.0001
allelic frequency of a = q = √q² = √0.0001 = 0.01. thus q = 0.01
From the formula p + q = 1 where p is the allelic frequency of A.
since q = 0.01
p = 1 - 0.01 = 0.99. The allelic frequency of A (p) = 0.99
p² = 0.99² = 0.9801. Genotypic frequency of AA= 0.9801
= 0.9801 x 1,000,000 = 980,100 individuals with AA (homozygous normal)
For 2pq genotypic frequency for hetrozygous (Aa).
Using the formula p² + 2pq + q² = 1. Since p² = 0.9801 and q² = 0.0001
2pq = 1 - (p² + q²)
= 1 - (0.9801 + 0.0001)
= 1 - (0.9802)
= 0.0198 = 0.0198 x 1,000,000 = 19,800 individuals with Aa
Monsoons can cause flooding and tear things down. However they can also provide with 80% of their annual rainfall.
In the formation of LTP, the entry of Ca2+ ions into the neuron activates protein kinases, which are the enzymes that contribute to the increased AMPA conductance of the postsynaptic cell.
<h3>What is LTP?</h3>
- LTP or Long-Term Potentiation is a biological process due to which synaptic connections formed between different neurons grow stronger due to frequent activation.
- It can be defined as a way by which the responses of brain change along with the experience thus dealing with learning and memory in the hippocampus.
- It is caused by combining activity of presynaptic and postsynaptic neurons.
- During synapses, Ca2+ is release as a neurotransmitter from the presynaptic neuron. This Ca+ enters the postsynaptic neuron and activates protein kinases.
- The protein kinases increase the activity of AMPA receptors which plays an important role in neurotransmission through glutamate.
Learn more about LTP here:
brainly.com/question/14879971
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