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Lera25 [3.4K]
3 years ago
7

What factors should we consider when determining why the chicken "loses" to the fox? A chicken can fly and perch on higher place

s than the fox can likely get to. Does one animal have worse hearing than the other? Or are its other senses not as keen? Does one animal sleep more soundly or just more than the other? What necessary information would you need to determine why one of these animals (the fox) tends to always come out on top when in some other scenarios the obvious result does not turn out as expected? Fully explain your rationale. Identify a different real-world situation and interpret the results of the outcome. Were the results expected? Fully explain your rationale.
Biology
1 answer:
never [62]3 years ago
8 0

Answer:

Domestic chicken evolved by artificial selection and therefore they are less adapted to survive in nature where prey populations coexist with the predators (like the fox).

Explanation:

Commercial chicken (<em>Gallus gallus domesticus</em>) is the result of the artificial selection exerted by early farmers in China 8,000 years ago. Artificial selection is aimed at benefiting one or more particular traits in detriment of others. Domestic chickens were selected by humans to produce fast-growing meat animals in detriment of traits found in wild progenitors of modern chicken. In consequence, the processes of artificial selection result in a loss in genetic diversity in traits that are not being selected including, for example, phenotypic characteristics associated with the ability to avoid predators.

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Who is clinically dead? helga, who exhibits no cortical functioning naomi, who is not breathing and whose heart is not beating j
Anna35 [415]

Answer: naomi, who is not breathing and whose heart is not beating

A person is considered clinically dead if their blood circulation and breathing is stopped because those two is needed to sustain live. Notice that the diagnosis need both of them, so only one of them is not enough. Helga and John has no problem in breathing and circulation, so they wont be considered clinically dead.

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What refers to the role of a species in it's ecosystem and often relates to what it eats or what consumes it?
mezya [45]

Answer:

ANSWER : NICHE

Explanation:

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3 0
3 years ago
People who are tune deaf are unable to follow a rhythm. Scientists have evidence that tune deafness can be genetic. The pedigree
butalik [34]

Question

Pedigree attached

a. Provide evidence from the pedigree that conclusively shows that the tune deafness allele is autosomal dominant, not autosomal recessive. Explain your reasoning.

b. Identify the genotypes of individuals 5 and 6, and then draw the Punnett square for the cross of these two individuals.

c. Compare the expected percentage of each phenotype of the offspring from the cross in part (b) with the actual percentage of each phenotype observed in the children of individuals 5 and 6.

Answer/Explanation:

a. Autosomal dominant means that even having one copy of the allele T will produce a tune deaf individual. The evidence of this is that individuals II.3 and 4 have children (III. 8 and 9) with normal tune perception. This suggests that they have inherited the normal allele from both parents. That means II.3 and II4 must be heterozygous, in order to pass on the normal allele. This makes sense if tune deafness is dominant (because 3 and 4 will both be Tt and Tt, so can pass on the t alleles). However, if tune deafness was recessive, that would mean that individual II 3 and 4 both have to carry 2 copies, meaning there is no way their children would have normal tune perception.

b. Since individual 5 is unaffected and we know this is the recessive trait, they must be Tt. Since individual 6 is affected, they must be either Tt or tt. However, they have children who are unaffected (11, 12, 13) who must be tt. This means, individual 6 must have the t allele to pass on, and must be Tt. Therefore, the cross between individuals 5 and 6 is tt x Tt:

         T        t

t        Tt       tt

t       Tt       tt

c) The punnet square shows the children from (b) have a 50:50 chance of being tune deaf vs normal tune perception (50% each). In contrast, the actual ratios are 25% tune deaf to 75% normal tune perception. (1:4). This deviates from the expected ratio, but since all of these are due to chance, it is not an unexpected occurrence. Perhaps if there were 10, 50 or 100 children (!) from this cross, the results would be more like the expected ratio

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