Salt marshes are primarily influenced by the tides
A. Rudolf Virchow ( Apex answer)
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B). Genes are expressed differently in liver cells and hair follicles
C). Hair follicle cells contain different genes from liver cells
D). Hair follicle cells do not produce DNA, but liver cells do
Answer:
B). Genes are expressed differently in liver cells and hair follicles
Explanation:
In given organisms all the cells of the body have the same number of genes, however, their activity varies due to differential expression of genes.
The differential expression of genes is regulated by several factors, such as histone modifications, DNA, etc. which may silence or activate the genes differentially in different cells.
Since the hair cells and liver cells of the organisms will have the same genes, they only vary due to the differential expression fo the genes.
Answer:
B) Genes are expressed differently in liver cells and hair follicles
Explanation:
Cell differentiation helps produce different cells with different functions that express different genes in the genome.
Liver cells and hair follicles are an example of cell differentiation creating different functions in multi-celled organisms.
The use of mitosis and meiosis varies among species due to their reproductive strategies and life cycles.
Meiosis, which produces genetically diverse gametes, benefits species by enhancing genetic variation and adaptability. Mitosis, on the other hand, generates genetically identical cells and is commonly observed in asexual reproduction for efficient cloning.
Complex life cycles often involve both processes at different stages. Environmental conditions and stability also influence the reliance on either mechanism. In stable environments, mitosis alone may suffice, while meiosis and sexual reproduction aid survival in challenging environments.
Learn more about meiosis and mitosis, here:
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