Usually, alleles that code for a characteristic that is dominant should be presented with an uppercase letter. And by having dominant alleles, it means that no matter if the individual has a recessive allele or not, the characteristic of the dominant allele must be shown.
Therefore, since detached earlobes are dominant, the letter representing for this allele should be E. Uppercase. And if the child has both E and E allele, it's no doubt that the phenotype (characteristics that are shown) should be having detached earlobes. So, your answer should be A. 100%
Even if the child has one lowercase e allele, as long as they have a dominant E allele, they'll still be 100% sure of having detached earlobes. Recessive trait (attached earlobes in this case) is only shown when both alleles of the genotype are recessive (e and e).
Answer: a molecule made of many small molecules
Explanation: Macromolecules are large molecules that are composed of smaller molecules called monomers. These macromolecules are polymers of the monomers units. Examples of macromolecules are proteins which have amino acids as their monomers and carbohydrates which have monosaccharide sugars such as glucose, and fructose as the monomers.
Answer:
A lunar eclipse occurs when the Moon passes directly behind the Earth into its umbra (shadow). This can occur only when the sun, Earth and moon are aligned (in "syzygy") exactly, or very closely so, with the Earth in the middle.
Explanation:
Answer:
There are three anatomical barriers in our immune system skin, the mucous membranes, and bony encasements.
The skin, consist of dermis or epidermis layer that provide conditions which are not favorable to bacterial growth. Normal biota present in skin inhibits potentially harmful microbes. Sweat glands and hair follicles produces toxic lipids and lysozyme that can kill bacteria. Symptoms rise due to skin barrier is redness, itching and allergy.
Mucous membranes are present in the lining of body cavities such as the genitourinary tract, the gastrointestinal tract and respiratory tract. These membranes are made up of epithelial cell and secerets mucus that traps microbes and avoid their entry into the body tissues. Mucus also contains lysozyme that is responsible for degrading bacterial peptidoglycan. Symptoms rise due to mucous membrane are coughing, sneezing and sour throat.
Bony encasements are present in skull and rib cage that avoid direct contact of organs from injury and entry of microbes.
I believe it is B. DNA Nucleotide, C. Codon, D. Gene, A. Chromosome