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insens350 [35]
4 years ago
5

The plasma membrane is composed of a phospholipid bilayer with embedded proteins. What is one of the functions of the embedded p

roteins?
A
allowing specific substances to flow into the cell
B.
C
D.
protecting the cell from physical harm
preventing the phospholipid tails from binding together
defining the cell's structure and shape
Biology
2 answers:
Sedaia [141]4 years ago
6 0
The answer should be B I believe I’m sorry if I’m not right!
Zigmanuir [339]4 years ago
3 0
The answer is a because I had it
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In a population of plants, the allele for long stems is completely dominant over the allele for short stems. If 35% of the popul
KatRina [158]
Assumptions:
1. Equilibrium has been reached for the allele proportions
2. Absence of <span>evolutionary influences such as </span>mate choice<span>, </span>mutation<span>, </span>selection<span>, </span>genetic drift<span>, </span>gene flow<span> and </span>meiotic drive<span>.
</span>
Defining L=long stem, l=short stem, and L is dominant over l.
f(x) = frequency of allele x  (expressed as a fraction of population)
Then the Hardy-Weinberg equilibrium law applies:
p^2+2pq+q^2=1
where 
f(LL)=p^2
f(Ll)=2pq
f(ll)=q^2

Given f(ll)=0.35=q^2, we have
q=sqrt(0.35)=0.591608
p=1-q=0.408392
=>
f(Ll)
=2pq
=2*0.408392*0.591608=0.483216
= proportion of heterozygous population

Answer: percentage of heterozygous population is 48.32%
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