Answer:
Bacteria and other living cells have some universal features that are, they are present in all the living cells.
These features include:
Plasma membrane: The lipid bilayer which separates the cell from the external environment. It is present in all the living organism.
Cytoplasm: It is a gel-like substance present within the plasma membrane of the cell (excluding nucleus). It contains and supports all the cell organelles and cell parts.
Ribosome: It is a vesicular structure made up of protein and ribosomal RNA. It is the main site of protein synthesis in all the cells. Prokaryotes generally contain 70S ribosomes and eukaryotes generally contain 80S ribosomes.
Genetic material: All the living organisms contains genetic material (usually DNA) either confined in the nucleus or floating freely in the cytoplasm.
Answer:
By collecting runoff during the rainy season much of the land degredation caused by water erosion is prevented.
Explanation:
On USA test Prep this would be option D.
Answer:
they will all be brown horses but only two will have both dominant alleles, the other two will each have one recessive
The F1 progeny will all have the genotype Zz and will all have normal feathers. When the F1 progeny are interbred, the F2 progeny will have the following genotypes and phenotypes:25% ZZ (bald)25% Zz (normal)50% zz (normal)The expected proportions for the F1 and F2 progeny are as follows:F1: 100% Zz (normal)F2: 25% ZZ (bald), 25% Zz (normal), 50% zz (normal)
In chickens, congenital baldness is due to a z-linked recessive gene. T
his means that the gene for baldness is located on the Z chromosome and an individual must have two copies of the recessive allele to exhibit the bald phenotype.
The bald rooster has the genotype ZZ, meaning he has two copies of the recessive allele. The normal hen has the genotype Zz, meaning she has one copy of the recessive allele and one copy of the dominant allele.
When these two individuals are mated, all of the F1 progeny will have the genotype Zz and will have normal feathers. When the F1 progeny are interbred, the F2 progeny will have the following genotypes and phenotypes:25% ZZ (bald)25% Zz (normal)50% zz (normal)
The expected proportions for the F1 and F2 progeny are as follows:F1: 100% Zz (normal)F2: 25% ZZ (bald), 25% Zz (normal), 50% zz (normal)
To know more about genotypes and phenotypes here:
B. to inform readers about new ideas about the disease using scientific evidence as support
C. to narrate the consequences of contracting the disease
D. to describe the lack of sanitation at the time of the story
"On the mode of communication of cholera" was written by Dr. John Snow in order to spread awareness about the disease and the new ideas giving scientific proof along with them. Through his text, he aimed at persuading the citizens and the officials to become more aware regarding the sanitation of their surroundings as Cholera is transmitted via the dirty surroundings. In his text he discussed the causes of spread, instances and scientific evidence of Cholera of its communication among different populations.
Hence, the correct answer is 'Option A and B'.