Answer:
Map distance = Genetic distance, GD = 3.9 MU ≅ 4 MU
Explanation:
The more separated two genes are, the more chances of recombination there will be. The closer they are, the fewer chances of recombination there will be. Two genes that are very close will have a few recombination events and are strongly bounded.
To analyze the recombination frequency, we have to know that:
- 1% of recombination = 1 map unit = 1centi Morgan = 1,000,000 base pairs.
- And that the maximum recombination frequency is always 50%.
The map unit is the distance between the pair of genes for which every 100 meiotic products one of them results in a recombinant one.
Knowing that the genes are linked, we can calculate genetic distances between them. First, we need to identify the genotypes of the parental gametes with the ones of the recombinants. We can recognize the parental gametes in the descendants because their phenotypes are the most frequent, while the recombinants are the less frequent. So:
Parentals:
- black, curved 337
- yellow, straight 364
Recombinants:
- Black, straight 17
- yellow, curved 12
To calculate the recombination frequency we will make use of the next formula: P = Recombinant number / Total of individuals.
P = Recombinant number / Total of individuals.
P = 17 + 12 / 337 + 364 + 17 + 12
P = 29 / 730
P = 0.039
The genetic distance (GD) will result from multiplying that recombination frequency (P) by 100 and expressing it in map units (MU).
GD = P x 100
GD = 0.039 x 100
GD = 3.9 MU ≅ 4 MU
Answer:
7. C
Explanation:
The more above is the layer, the more recent it is. So the bird lived after 'cause it was in a layer above.
Production, transport, use and disposals
False. The mountain zebra and the donkey do not belong to the same species.
<h3>What are species?</h3>
The species represent the lowest and narrowest taxonomic categories as far as the classification of living organisms is concerned.
A species represents a group of organisms whose mating will lead to the production of valid offspring.
Thus, no two different organisms can bear the same species name unless they can mate and produce fertile progenies.
What the mountain zebra and the donkey share is the genus name, not the species name. Different species of organisms can bear the same genus name as far as taxonomy is concerned.
More on taxonomy can be found here: brainly.com/question/19184314
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Explanation:
d. A structure that alerts the brain to make a change
