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Serggg [28]
3 years ago
12

Which best defines cohesion?

Biology
2 answers:
bixtya [17]3 years ago
8 0
<span>he action or fact of forming a united whole.</span>
NISA [10]3 years ago
3 0
<span>the action of forming a united whole</span>
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At the end of the term, the professor locks the students in the classroom with plenty of food and water and leaves them there fo
levacccp [35]

Answer:

a. 0.7

b. 0.3

c. Yes

d. 90

Explanation:

As the random mating population was escaped from external evolutionary forces such as mutation, natural selection, and migration, the gene frequency will not change over time. The population will be at Hardy-Weinberg equilibrium throughout the time.

<u>As the number of sleepyheads (recessive trait) was 90 out of class of 1000 students at the start of course.</u>

<u />

q²=0.09 ∵ fraction of sleepyheads = 90/1000 = 0.09 denoted by q²

q that is the recessive gene frequency will be equal to 0.3 (by taking square root of P²

Hence, <em>allele frequency of a allele is 0.3</em>

<em></em>

As, frequency of dominant allele A is denoted by letter p and p+q=1

∴ p=0.7 As p=1-0.3

Hence,<em> allele frequency of A allele is 0.7</em>

<em></em>

Counting the probability of aa alleles (sleepyheads);

As a= 0.3

∴ aa= 0.3×0.3 = 0.09 (In terms of percentage, it is 9%)

To 0.09×1000= 90 or 9% of 1000 = 90

Hence, 90 students should be sleepyheads.

8 0
3 years ago
Compare the stucture of a food web with a food chain
zvonat [6]

 food chain:The simplest representation of energy in a community. At the base is energy stored in plants, which are eaten by small organisms, which in turn are eaten by progressively larger organisms; the food chain is an oversimplification in that most animals do not eat only one type of organism.  

------------------  

food web:the interconnected feeding relationships in an ecosystem. These relationships can be complex; some organisms may feed on more than one trophic level, or changes may occur depending on a species' life history stages or the availability of food.

7 0
3 years ago
2. What are the steps of Binary Fission?
BaLLatris [955]

Answer:

see the file attached!!

4 0
2 years ago
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An expectant couple asks the nurse about intercourse during pregnancy and if it is safe for the baby. the nurse should tell the
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It is unsafe because it could give the baby defects. 
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What is the primary function of most bacteria in a food web?
nata0808 [166]
Bacteria mostly act as "Decomposer" 'cause they decompose the dead & decaying matter, back into inorganic materials.

Hope this helps! 
7 0
3 years ago
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