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a_sh-v [17]
3 years ago
10

In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such

that when the yellow allele started to become rare, the reproductive success of purple flowers decreased and the reproductive success of yellow-flowered individuals increased in a process known as _
Biology
1 answer:
Kitty [74]3 years ago
8 0

In the study of Gigord and colleagues using Elderflower orchids, the allele frequencies of yellow and purple flowers varied such that when the yellow allele started to become rare, the reproductive success of purple flowers decreased and the reproductive success of yellow-flowered individuals increased in a process known as <u>frequency-dependent selection.</u>

<u></u>

Frequency-dependent selection is an evolutionary process in which the fitness of a phenotype or genotype is dependent on the frequency of that phenotype or genotype in a particular population.

  • Positive frequency-dependent selection raises the fitness of a phenotype or genotype as it becomes more prevalent.
  • In the case of negative frequency-dependent selection, the fitness of an increasingly prevalent phenotype or genotype diminishes.

In a broader sense, frequency-dependent selection involves biological interactions that make the fitness of an individual dependent on the frequencies of other genotypes or phenotypes within the population.

Learn more about the frequency-dependent selection here :

brainly.com/question/14630940

#SPJ4

<u></u>

<u />

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Is cashew a multiple fruit​
Gnesinka [82]

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7 0
3 years ago
Explain why an individual that is heterozygous for this inversion would be partially sterile
Ipatiy [6.2K]
<span>Heterozygotes for inversion have a serious problem chromosome pairing at meiosis and recombination within the characteristic loop leads to chromosome duplication, deficiencies and in some cases two centro meters after recombination in meiosis.The abnormalities are usually not recovered in next generation because gametes or zygotes are receiving them are in-viable.</span>
4 0
4 years ago
14). During the early 1700’s, a small group of pacifist Protestants fled Germany to avoid religious persecution. This group, the
abruzzese [7]
A) In the Dunker population, the frequency of IB allele is 0.3 and the frequency of i allele is 0.4. In the general population, the frequency of IB allele is 0.1 and t<span>he frequency of i allele is 0.5.
</span>
If:
I^{A} - <span>the frequency of IA allele
</span>I^{B} - <span>the frequency of IB allele
</span>i - t<span>he frequency of i allele

Then:
</span>I^{A} I^{A} + <span>I^{A} i - the frequency of individuals with A blood type
</span>I^{B} I^{B} + <span>I^{B} i - the frequency of individuals with B blood type
</span>ii <span>- the frequency of individuals with O blood type
</span>
Let's first take a look on the Dunker population:
I^{A} = 0.3
ii=0.16&#10;

<span>Since there is only one possible genotype for O individuals - ii - the frequency of the allele i is square root of the frequency of O individuals:
</span>i= \sqrt{ii}
⇒ i =  \sqrt{0.16}
⇒ i=0.4

Now, we have the frequencies of two alleles (I^{A} and i). To calculate the frequency of I^{B}<span> allele, we will use the formula:
</span>I^{A} + I^{B} + i = 1
⇒ I^{B} = 1- I^{A} - i
⇒ I^{B} = 1-0.3-0.4
⇒ I^{B} = 0.3

Now, in the general population:
I^{A} = 0.4
ii=0.25

<span>Similarly to the work for the Dunker population:
</span>i= \sqrt{ii}
⇒ i = \sqrt{0.25}
⇒ i=0.5

I^{A} + I^{B} + i = 1
⇒ I^{B} = 1- I^{A} - i
⇒ I^{B} = 1-0.4-0.5
<span>⇒ I^{B} = 0.1
</span>


b) A founder effect is a result of geographical separation of a few individuals from the original population. Those founding individuals will form a new population. The Dunker population was not only geographically separated, but also genetically. The group interbreeding was present resulting in increasing those allele frequencies that were the most common in the founding population. In this case, the most individuals from the founding population had B blood type.
6 0
4 years ago
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Answer:

The cell may be converted to malignant tumor cell.

Explanation:

Due to failure of lag in the normal repair process, there will be formation of irreparable mutated DNA which may include double-strand breaks and cross-linkages in DNA. Due to this the normal functioning of the cell will be disturbed and there may be formation of malignant tumor or cancer. The normal repair process in necessary for any cell to compensate the mutations in DNA that even occur during division or replication.

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Answer:

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Explanation:

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6 0
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