A gardener crosses tall true–breeding pea plants with short true–breeding ones. Tall plants are dominant to short ones. He collects the seeds to grow F1 plants and then allows them to self–pollinate to form an F2 generation. Which of the following describes the traits of the offspring correctly?

The question is incomplete as it does not have the options which are:

A) the presence of many hydroxyl groups and at least one carbonyl group.

B) the presence of at least one amine group and one carboxylic acid group on each molecule.

C) the physical properties of odor, color, and melting point within certain guidelines.

D) a common structure consisting of long hydrocarbon chains.

E) the physical property of solubility in nonpolar organic solvents.

Answer:

E) the physical property of solubility in nonpolar organic solvents.

Explanation:

Lipids are one of the biomolecules which are involved in the formation of various other complex molecules in the body. The structure of lipids contains a very long hydrocarbon chain which provides hydrophobic to the compound.

Since they are hydrophobic therefore cannot form bonds with the water and thus repel water. This molecule is therefore considered a non-polar molecule. These non-polar molecules are soluble in the non-polar organic solvents only.

Thus, Option-E is the correct answer.

Answer:

brains that helped them adapt to unstable, shifting landscapes

Explanation:

The correct answer is option B) their DNA sequences.

The best comparison for finding out the evolutionary relationship between two organism is the comparison of their DNA (deoxyribonucleic acid) sequence. The organisms, which are more closely related to one another share more similarity in the DNA sequence as compared to the distantly related organism, so, the comparison of the DNA can help in determining the evolutionary relationship between the organism.

Answer:

The correct answer would be the third option.

Vaccination refers to the administration of weekend or attenuated microorganism or antigen in the body. It helps in developing adaptive immunity in the body.

Thus, vaccine neither wears out with time nor body eliminates the vaccine.

However, the flu virus changes every year due to the short life cycle. Consequently, the memory B cells cannot recognize changed virus due to which the body loses its immunity against the virus.

This is why doctors recommend that people should get flu shot each new flu season.