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rusak2 [61]
3 years ago
14

The table shows the crossing-over frequencies for three genes in the fruit fly Drosophila. The greater the frequency, the more l

ikely that crossing over separates the genes. The gene for eye color (A), wing shape (B), and body color (C) are found on the same chromosome.
Genes | Crossing over frequency
A and B | 12.5%
A and C | 6%
B and C | 18.5%


What are the two most likely sequences of these genes on a gene map for this chromosome? Select two options

a. B,A,C

b. A,B,C

c. C,B,A

d. C,A,B
Biology
1 answer:
Scrat [10]3 years ago
8 0

Answer: a. B,A,C

b. C,A,B

Explanation: trust me

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Match each characteristic to the type of protist it describes
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Explanation:

PLANT-LIKE:

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ANIMAL-LIKE:

slime mold belongs in this category

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FUNGUS-LIKE:

feeds on decaying matter enclosed by a membrane called a pellicle.

6 0
3 years ago
Describe how the DNA in a cauliflower plant is similar to and different from the DNA in Brussels sprouts.
timofeeve [1]

Answer:

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6 0
2 years ago
During meiosis i, maternal and paternal chromosomes come together during the process called ________ to form a ________.
raketka [301]

Answer:synapsis; tetrad

Explanation:

4 0
2 years ago
Which disappears more rapidly from a population, a deleterious dominant allele or a deleterious recessive allele?
Allisa [31]

Answer:

Selection is a directional process that leads to an increase or a decrease in the frequency of genes or genotypes. Selection is the process that increases the frequencies of plant resistance alleles in natural ecosystems through coevolution, and it is the process that increases the frequencies of virulence alleles in agricultural ecosystems during boom and bust cycles.

Selection occurs in response to a specific environmental factor. It is a central topic of population and evolutionary biology. The consequence of natural selection on the genetic structure and evolution of organisms is complicated. Natural selection can decrease the genetic variation in populations of organisms by selecting for or against a specific gene or gene combination (leading to directional selection). It can increase the genetic variation in populations by selecting for or against several genes or gene combinations (leading to disruptive selection or balancing selection). Natural selection might lead to speciation through the accumulation of adaptive genetic differences among reproductively isolated populations. Selection can also prevent speciation by homogenizing the population genetic structure across all locations.

Selection in plant pathology is mainly considered in the framework of gene-for-gene coevolution. Plant pathologists often think in terms of Van der Plank and his concept of "stabilizing selection" that would operate against pathogen strains with unnecessary virulence. As we will see shortly, Van der Plank used the wrong term, as he was actually referring to directional selection against unneeded virulence alleles.

4 0
3 years ago
Hello everyone! just need help with questions 5 and 6!:) thankyou!!
worty [1.4K]

Answer:

5.) While it appears in a balanced ecosystem that nothing is changing, there is indeed either subtle or gradual changes that constantly happens through natural succession.

6.) Predator-prey relationships achieve a state of balance:

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Explanation:

I hope this helped! :)

4 0
3 years ago
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