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Andrew [12]
3 years ago
10

Consider the terms egg, sperm, and sporophyte. Which process links egg and sperm directly to sporophyte?

Biology
2 answers:
Andreyy893 years ago
7 0
Fertilization is the answer.
damaskus [11]3 years ago
5 0

Answer:

Fertilization

Explanation:

Plants exhibit alternation of two generations. The sporophyte forms haploid megaspore and microspore by meiosis. Megaspore and microspore represent the first cell of female and male gametophyte respectively. Megaspore develops into embryo sac which bear egg while microspore carries male gametes. Fusion of egg cell with male gamete form diploid zygote and the process is called as fertilization. The zygote then develop into the sporophyte.

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A recessive allele for blue eyes (b) has a frequency of .3 in population 1 and a frequency of .15 in population 2. Pollution cau
tia_tia [17]

Answer:

The frequency of blue eyes in population 2 after the migration is q₂´ = 0.195 ≅ 0.2

Explanation:

Whenever migration, m, occurs between two populations, there is genetic flow going on. Genetic flow is an evolutive strength only if migration > 0 and if the allelic frequency in one generation is different from the allelic frequency in the next generation.

Genetic flow acts homogenizing the allelic frequencies between the two populations, and it might introduce variability into the new one.

For genetic flow to be possible, there needs not only the movement of the genes from one population to the other but also the reproduction process on the new population. Hence, it involves an interaction between the dispersion pattern and the reproductive system.<u> </u>

<u>Available data:</u>

  • Population 1 → frequency of the recessive allele b = 0.3
  • Population 2 → frequency of the recessive allele b = 0.15
  • m = proportion of gametes coming from the population 1  = 30% = 0.3
  • <em>1-m = proportion of gametes that remain in the population</em>
  • <em>p = frequency of the dominant allele in population 1 before migration</em>
  • <em>q = frequency of the recessive allele in population 1 before migration</em>
  • <em>p´ = frequency of the dominant allele in population 2 after migration</em>
  • <em>q´ = frequency of the recessive allele in population 2 after migration</em>

To calculate the frequencies of the gametes (p1, q1, p2, q2) after migration, we can use the following equations:

  • p₁’ = p₁ (1 - m) + p₂ x m
  • q₁´ = q₁ (1 - m) + q₂ x m
  • p₂’ = p₂ (1-m) + p₁ x m  
  • q₂´ = q₂ (1 - m) + q₁ x m

So to know the frequency of blue eyes in population 2 after the migration, we just need to replace the terms in the equation for the given values, and then calculate q₂´.

q₂´ = q₂ (1 - m) + q₁ x m

q₂´ = 0.15 (1 - 0.03) + 0.3 x 0.3

q₂´ = 0.105 + 0.09    

q₂´ = 0.195 ≅ 0.2

   

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3 years ago
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Leni [432]
Hello There!

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White blood bells - Fight against bacteria and diseases
Platelets - Small fragments of bells. They are involved in forming blood clots.

Hope This Helps You!
Good Luck :) 

- Hannah <span>❤</span>
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The number of cytosine in a DNA molecule equals the number of guanine.
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The name of the frog is platymantis

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Answer:

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I hope this helps

5 0
3 years ago
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