Answer:
i have been researching and i found they have 42 chromosomes. Blue whales have 44 and sperm whales have 46 i was getting different numbers for different whales
Explanation:
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Answer:
a. Bacteria cannot carry out splicing.
Explanation:
Human genes contain non-coding sequences called introns. Transcription of genes produces primary transcripts that undergo post-transcriptional modifications to produce mature mRNA. These modifications include removal of introns, the addition of 3' poly-A tail and 5' cap. The splicing of introns from primary transcripts is followed by ligation of protein-coding sequences exons to produce mature mRNA. The mRNA leaves the nucleus and serves as a template for protein synthesis.
Splicing of introns requires specific machinery such as several small nuclear ribonucleoprotein complexes, etc. which are not present in a prokaryotic cell. Therefore, a eukaryotic gene like the gene for human growth hormone is not expressed in a bacteria cell as these prokaryotic cells cannot carry out the splicing of introns from pre-mRNA.
Alleles are the alternative form of a gene that code for a given trait, the alleles may be dominant or recessive or exhibit incomplete dominance. When two alleles are similar they are referred to as homozygous while they are not similar they are referred to as heterozygous. Based on the founder effect, rare alleles and combinations may be improved in new populations because of the reduced size of the initial population.
Most frequently, a tornado develops when a mass of cold, dry air crosses over a quantity of warm, moist air, creating huge storm clouds in the process.
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How a tornado form?</h3>
The creation of a storm, which in turn promotes the development of a tornado, is what causes tornadoes, which are primarily continental phenomena, to originate. This happens when cold fronts move into areas where the air is warmer and more unstable.
These movements in this instance are caused by the convergence of hot and cold air currents, which results in a spinning area of pressure.
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Answer:
the answer is d, nucleic acids arranged in a double helix
