The most reactive element among the options is iodine. The Option A.
Iodine is the most reactive element in this list because it belongs to the halogen group of elements in the periodic table, which is known for its high reactivity.
Halogens readily form compounds by gaining electrons to achieve a full outer electron shell. Iodine, with its seven valence electrons has a strong tendency to gain one more electron to achieve stability.
This makes it highly reactive especially when it comes into contact with elements that readily lose electrons such as metals.
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Answer:
iodine
Explanation:
A. Scientists don't stop with the first step of their experiment because they don't think that just using their observations is a very good place to start to prove their hypothesis.
B. Scientists don't stop with the first step of their experiment because they not only want to observe but they want to test their observations to be sure they are correct.
C. Scientists don't stop with the first step of their experiment because they want other scientists' opinions because they may not trust their own observations.
D. Scientists don't stop with the first step of their experiment because they would rather plan and run experiments than just observe the world around them.
B. Females don't have X chromosomes so aren't affected by gene disorders passed on the X chromosome.
C. Females receive an X chromosomes from each point parent, but in cases of recessive disorders, the muted chromosome isn't passed on to daughters.
D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.
Answer:
D. Females receive an X chromosome from each parent. If a mother is a carrier of an X-linked recessive disorder, her daughters have 50 percent chance of receiving her normal X chromosome and a 50 percent chance of receiving her mutated X chromosome.
Explanation:
Females have XX chromosomes as allosomes. They receive one X chromosome from mother and one from father. The female in the III generation received both the healthy X chromosomes from each parent that is why she is not even carrier for the disease.
The modified diagram clearly indicating the genotyope of all the members of the pedigree tree is attached. In the diagram, healthy X chromosome is indicated by X while mutated X chromosome is indicated by doted X. It is clear from the diagram that this female of III generation has XX chromosomes.
The cross for that particular female is shown as under:
Mother Father
ẊX x XY
/ \ / \
ẊX ẊY XX XY
XX are the allosomes of this female child.
Answer: D.
Explanation: Females have XX chromosomes while males have XY