16. A Couple with the ability to taste PTC have two grown sons and one grown daughter. The sons have the ability to taste PTC. Their daughter is a PTC non-taster. She married with a PTC non-taster man and have two sons.
The ability to taste Phenylthiocarbamide<span> or PTC is inherited by autosomal dominant trait. The daughter of the first generation should be autosomal recessive(tt) as she was a non-taster. That means her parent would be heterozygotes(Tt) since they have the ability to taste PTC. Her brother could be homozygote dominant(TT) or heterozygote(Tt). The pedigree would be:
i. no-shade square(Tt) -----------------</span>no-shade circle(<span>Tt)
ii. </span>no-shade square(T?), no-shade square(T?), shaded circle(tt)------shaded square(tt)
iii. shaded square(tt) and shade square(tt),
17. She marries with non-taster too which means also a homozygote recessive. Since both parents are homozygote recessive, the children should be 100% homozygote recessive too.
The phenotype of the sons in generation III would be 100% non-taster.
18. The genotype of the female should be XX. To express the recessive trait, an individual need to have all recessive genes. If she has a recessive trait of an X-linked disease then both of the X genes should have a lowercase letter(recessive).
Answer:
C.


19. The genotype of a male should be XY. If he has a recessive trait of an X-linked disease then the X genes should have a lowercase letter(recessive). As there is only one X gene in male, to express recessive he only needs 1 recessive gene.
Answer:
E.

Y
Natural resources are resources that are found in or on the Earth and are used in the production of goods and services.
Examples of natural resources include: air, water, light, plants, animals, minerals, soil, and fossil fuels.
Answer:
In all honesty, our president at the moment puts no thought into the words he's saying. He never stops for one second to collect logic and reasoning for the sentence he is about to say. It really makes you think, If he doesn't put thought into those things, would he put thought into the decisions that could possibly start a World War, or maybe even something even worse.
Explanation:
Answer: Group think
Explanation:
Group think is one of the type of psychological phenomenon in which the group of the people make the decisions, discussing the different types of factors for accomplishing the given tasks and project more efficiently.
The main purpose of the group think is that it producing the various types of decision making process and also reducing all the discussion conflicts between the people.
According to the given question, the failure for expressing the various types of potential risk and the concern is one of the example of the group think process.
Therefore, Group think is the correct answer.