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3 years ago

For sexually reproducing multicellular organisms, when does mitosis begin?

2 answers:

8 0

"The evolution of sexual reproduction is a major puzzle because asexual reproduction should be able to outcompete it as every young organism created can bear its own young. This implies that an asexual population has an intrinsic capacity to grow more rapidly with each generation. This 50% cost is a fitness disadvantage of sexual reproduction. The two-fold cost of sex includes this cost and the fact that any organism can only pass on 50% of its own genes to its offspring. One definite advantage of sexual reproduction is that it prevents the accumulation of genetic mutations. Sexual selection is a mode of natural selection in which some individuals out-reproduce others of a population because they are better at securing mates for sexual reproduction. It has been described as a powerful evolutionary force that does not exist in asexual populations."

olganol [36]3 years ago

6 0

The answer is C. its easy just study Don't Look for answers

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What is the expected phenotypic ratio for a cross between two individuals that are heterozygous for a given trait? Use one of Me

svetlana [45]

The expected phenotypic ratio for a cross between two individuals that are heterozygous for a given trait is 3:1.

<h3>What is Phenotype?</h3>

This is referred to the physical characteristics of an organism such as the size, shape etc.

When two heterozygous traits are crossed:

Rr × Rr ⇒ RR Rr Rr rr

The ratio is therefore 3:1 of the dominant to recessive phenotype.

Read more about Phenotype here brainly.com/question/22117

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2 years ago

Which of the following is considered a mutagen? A- DNA polymerase B- red meat C- UV light D- All of the above are correct.

rusak2 [61]

The correct answer is C. UV light.

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3 years ago

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salantis [7]

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2. Coast Damage.

3. Death of Biological Resources.

Explanation:

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The oak tree fungal pathogen, Phytophthora ramorum, has migrated 800 kilometers in 15 years. West Nile virus spread from New Yor

dlinn [17]

The oak tree fungal pathogen, Phytophthora ramorum, has migrated 800 kilometers in 15 years. West Nile virus spread from New York State to 46 other states in 5 years. The difference in the rate of spread is probably related to the mobility of their hosts

<h3>What is West Nile virus ?</h3>

West Nile fever is brought on by the single-stranded RNA virus known as the West Nile virus (WNV). It belongs to the same genus as the Zika virus, dengue virus, and yellow fever virus, Flavivirus, and is a member of the family Flaviviridae. Mosquitoes, primarily Culex species, are the main vectors of the virus. Since birds are the major hosts for WNV, the virus continues to spread via a "bird-mosquito-bird" cycle. The virus shares genetic ancestry with the family of viruses that cause Japanese encephalitis.

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To learn more about West Nile virus from the given link:

brainly.com/question/1262992

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1 year ago