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Pie
4 years ago
9

Biology Help. 6 questions?

Biology
1 answer:
NeX [460]4 years ago
5 0
Check the answers below:

• Genetic Drift refers to the change of the frequencies of allele due to some random events• All the choices are correct.• The answer is true.• Other term for reinforcement is dispersive selection• The populations of birds will not be able to interbreed because they are different species.• The fitness of the large-beaked birds will increase and also it increases to possibility of creating new species.
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small group of 100 people decide to isolate themselves from the world and move to a small and remote deserted island. Out of thi
irina [24]

Answer:

Frequency of p = 0.684

Frequency of p = 0.316

Number of individuals with homozygous dominant (AA) = 47

Number of individuals with heterozygous (Aa)= 43

Number of individuals with homozygous recessive (aa) = 10

Explanation:

Out of 100 people, 10 have albino skin (aa)

So, the frequency of homozygous recessive individuals (q^{2}) is \frac{10}{100} = 0.1

Now, q will be

= \sqrt{q^{2} } = \sqrt{0.1} \\= 0.316

As per Hardy Weinberg's equation -

p + q = 1

Substituting the value of q in above equation, we get -

p + 0.316 = 1p = 1 -0.316\\p = 0.684

Now the frequency of homozygous dominant (AA) will be

p^{2} = 0.684^{2} \\= 0.467

Hence, out of 100 people 0.467 * 100 = 46.7 or 47 people are homozygous dominant (AA)

Like wise out of 100 people 0.1 * 100 = 10 people are homozygous recessive (aa)

As per As per Hardy Weinberg's equation-

p^{2} + q^{2} + 2pq = 1\\

Substituting the values in above equation, we get -

0.467 + 0.316 + 2pq = 1\\2pq = 1 -( 0.467+ 0.1)\\2pq = 0.433

So, out of 100 people 0.433 * 100 = 43.3 or 43 people are heterozygous (Aa)

7 0
3 years ago
What are two important processes that occur during the prophase?
Sergio [31]

Answer:

In prophase, the nucleolus disappears and chromosomes condense and become visible. In prometaphase, kinetochores appear at the centromeres and mitotic spindle microtubules attach to kinetochores. In metaphase, chromosomes are lined up and each sister chromatid is attached to a spindle fiber.

Explanation:

7 0
3 years ago
What are some safety concerns for students working in the lab?
Verizon [17]
Chemical burns, eye safety, combustion
3 0
3 years ago
What is the medical term for swimmer's ear?
skelet666 [1.2K]
Otitis external is the medical term for swimmers ear.
6 0
3 years ago
In some deserts, the air temperature can change over 60 to 70 degrees in a single day. Which of these properties
bazaltina [42]

Answer:

Being endothermic

Explanation:

Humans are not cold-blooded and we don't photosynthesise so only the second option applies to humans;

We produce heat internally within our bodies so we are endotherms, i.e. warm-blooded;

We shiver and have thermogenesis through metabolism to generate heat to keep body temp up and also sweating and physiological mechanisms to cool out bodies down.

3 0
3 years ago
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