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Gnom [1K]
3 years ago
10

What has a glassy shell called a frustule?

Biology
2 answers:
Greeley [361]3 years ago
5 0
A unique feature of diatom cells is that they are enclosed within a cell wall made of silica<span> (hydrated silicon dioxide) called a </span><span>frustule.</span>

ahrayia [7]3 years ago
3 0
That would be a DIATOM
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Ed biked home from school in 400 seconds. His home is located 2000 m south of the school. What was his velocity?
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V = m/s
v = 2000m/400s
v = 5m/s
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Nick hypothesizes that wax has a higher melting point than chocolate. How can Nick test his hypothesis?
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Melting them both in the same environment and measuring the temperature at which each melts
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Genetic modification in agriculture is like nuclear power: nobody loves it, but climate change has made it an important option.
Alenkinab [10]

The correct answer is option c, that is, people voting not to allow government money to fund genetic modification research.  

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3 0
3 years ago
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Phenylketonuria (PKU) is a genetic disease caused by the inability to break down the amino acid phenylalanine. If untreated it l
tiny-mole [99]

Answer:

Therefore, 98% of the US population have no alleles for PKU

Explanation:

The Hardy-Weinberg equilibrium states that the amount of genetic variation in a population will remain constant from one generation to the next in the absence of disturbing factors.

The Hardy-Weinberg equilibrium is expressed quantitatively using a mathematical equation known as the Hardy-Weinberg equation. the equation is given below:

p² + 2pq + q² = 1

also, p + q = 1

Given a pair of alleles, S and s with A dominant and a recessive

where p is the frequency of the dominant allele in the population,

q is the frequency of the recessive allele in the population,

p² represents the frequency of the (SS)  dominant genotype,

q² represents the frequency of the (ss) recessive genotype,

2pq represents the frequency of the heterozygous genotype

From the given question,

q² = 1/10000 = 0.0001

q = 0.01

from p + q = 1

p = 1 - 0.01 = 0.99

p² = 0.98

Therefore, 98% of the US population have no alleles for PKU

4 0
3 years ago
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