Answer:
Order the steps to take when drawing electron dot diagrams.
Count the dots to make sure that all of the valence electrons are represented.
✔ 4
Draw dots around the chemical symbol to represent the valence electrons of the atom.
✔ 3
Use the periodic table to find the chemical symbol of the atom and the number of electrons in the valence shell.
✔ 1
Write the chemical symbol of the atom.
✔ 2
Explanation:
I did it on Egde I guess on the answers BTW just to help you guys
Answer:
When analyzing data on the nitrogenous base content of the DNA of various species, the claims are supported by the data:
- <em>In any one species, the amount of adenine closely approximates that of thymine. </em>
- <em>In any one species, the amount of guanine closely approximates that of cytosine. </em>
- <em>The amounts of A, T, G, and C in DNA varies from species to species. </em>
<em>(options A, B and D)</em>
Explanation:
Organizing the data has to:
<u>Source of DNA A T G C </u>
Streptococcus 29.8 31.6 20.5 18.0
Yeast 31.3 32.9 18.7 17.1
Herring 27.8 27.5 22.2 22.6
Human 30.9 29.4 19.9 19.8
E. Coli 24.7 23.6 26.0 25.7
DNA is the molecule that contains the genetic information of each species, formed by sequences of nitrogenous bases Adenine, Thymine, Cytosine and Guanine.
Since Adenine and Thymine -as well as Cytosine and Guanina- are complementary, the percentage of them will be very similar in each DNA molecule.
The genetic information -which determines the physical and functional characteristics of each organism- is encoded in the DNA and is different for each species, so the percentages of nitrogenous bases vary from species to species.
They build more houses and more factories to produce more goods for the population also including more vehicles for more income of people buying them. Stores and etc.
Answer: mother: XX^aa, father: X^YAa, son: X^YAa, daughter: X^X^aa.
Explanation:
Color blindness is a genetic disorder that affects the ability to distinguish colors. It is hereditary and is transmitted by an X-linked recessive allele. If a male inherits an X chromosome with the altered allele he will be color blind. In contrast, females, who have two X chromosomes, will only be colorblind if both of their X chromosomes have the altered allele. This is because <u>males have one X chromosome and one Y chromosome, while females have two X chromosomes</u>.
If the woman has normal vision, that means she cannot have both chromosomes affected. She can only have one affected chromosome (be a carrier) or none at all. Also, if she has blue eyes, which is a recessive trait, then both alleles are recessive. But the eye color is not on the X chromosome. For example, her eye color genotype can only be aa, because if she had at least one dominant allele she would have brown eye color. As for the other trait, she can be XX^, with X^ being an affected (carrier) allele or XX, i.e. both normal. So in summary, her genotype can be XXaa or XX^aa
If she has a brown-eyed male child who is also colour blind, he has inherited the allele for colour blindness from his mother, since the father does not pass on an X chromosome to the male children, only the Y. With this we can now rule out the mother's XXaa genotype since she had to have passed on her affected X^ chromosome. Then the genotype of the mother is XX^aa. And since her mother can only pass on one allele to (recessive) because she does not have allele A, the dominant that determines her brown eye color can only come from the father. So the genotype of this son is X^YAa. The female daughter has color blindness and blue eyes. So she had to inherit the affected X^ chromosome from the mother (which we already know she has) and an affected X^ chromosome from the father, because the daughter needs to inherit both affected X^ chromosomes to develop the disease. And if she also has blue eyes, she had to have inherited a recessive allele from the mother and another from the father. So with this information we can say that the father's genotype can only be X^YAa. Because the father must have both A and A alleles of the same eye color, because he passed the dominant one to the son and the recessive one to the daughter. At last, the genotype of the daughter is X^X^aa.
Answer:
There are four main stages in the water cycle. They are evaporation, condensation, precipitation and collection.
Explanation:
