Answer:
Entirely asexual populations of animals are rare.
The cost of sexual reproduction is considered to be twice that of asexual reproduction, because sexual females produce ≈ 50% male offspring, and males typically contribute only their genes to reproduction (Maynard Smith, 1978). Following this logic, asexual reproduction should dominate unless there is greater than a two-fold advantage to sexual reproduction.
B) Factors that might maintain a given mode of reproduction might include access or availability of mates, disease, or parasites. For example, if diseases and parasites have a major effect on the population, the Red Queen hypothesis suggests that sexual reproduction would be favored
C) Sexual selection is thought to be one way by which sexual reproduction is maintained, because only fit males are able to mate. In an environment free from enemies, asexual reproduction would be favored, but are unlikely to persist over evolutionary time, because when the environment changes they will have much less ability to adapt (owing to a lack of novel genetic variation that would be provided by segregation and recombination in a sexual population).
Answer:not sure if this is what youre looking for but the air is made up of 78.09% nitrogen, 20.95 oxygen, 0.93% argon and 0.04% carbon dioxide
Explanation:
Answer:
Allele frequency
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Hello. This question is incomplete. The full question is:
John Allen is scheduled for a diagnosis on tooth #20. This is Mr. Allen's first time to the endodontist, and his subjective comments describe pain when chewing on the affected side and a constant dull pain lasting for approximately a week.
How do you think Mr. Allan knew ro come to a endodentist for dental treatment?
Answer:
Mr. Allan learned that he needed treatment with an endodentist through consultation with a general dentist.
Explanation:
It is likely that when Mr. Allan felt discomfort in the tooth, he made an appointment with the general dentist. Through the analysis of Mr. Allan's case, the general dentist realized that Mr. Allan had a very specific problem and that he should be treated with a professional, someone who could deal with the problem directly and more effectively. For this reason, Mr. Allan's dentist suggested that he look for an endodentist who could help him, since Mr. Allan was having problems with dental pulp.
