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Which of the following allows for DNA to make identical copies during interphase?

A) the helical structure

B) the complimentary nitrogen base pairs

C) the imbedded proteins throughout the DNA molecule

D) none of the above

Pattern baldness in males is a trait found on the "x" sex chromosome (pair 23). Which of the following is a true statement?

A) If a boys father is bald, he has a fifty percent chance of also being bald.

B) Baldness can only be inherited from the mother.

C) All males have a twenty-five percent chance of inheriting pattern baldness.

D) none of the above

Which of the following is NOT part of a DNA molecule?

A) nitrogen base

B) phosphate

C) potassium

D) sugar

Thankyou. The most detailed, and best answer will not only recieve the best answer award, but also a thumbs up, and the 2 points for answering the question. (A total of 13 points.)

2007-01-01 09:13:46 · 6 answers · asked by tony c 2 in Science & Mathematics Biology

6 answers

1) B is what DNA polymerase follows when it grabs floating nucleotides to attach to the parent molecule.

2) The answers are not entirely true (I don't how how to explain that better), so it must be D

3) C, potassium, is not part of the DNA molecule. See website to see what it looks like

2007-01-01 10:15:46 · answer #1 · answered by disoneguy300 3 · 2 0

Q1- Dunring interphase, the DNA is spilt by helicase((I think)) and made into a replication fork. The complimentary nitrogen base pairs are then added by DNA polymerase. They are added to the 3' end first, in one straight movement, an dthey are added to the 5' end using primers and Okasaki fragments. So the answer is B/

Q2- If I'm not mistaken, since it is carried on the X chromosome, you would need to know the genome of the mother as well, because she can be a carrier. So, D.

Q3- DNA molecules are double helix structures of A nitrogen base(Adenine, Thymine, Cytosine, and Guanine), a sugar and a phosphate, The nitorgen bases code for the actual gentic material. They pair adenine with thymine and cytosine with guanine. Adenine and Guanine are the purines, and they have two organic rings. Cytosine and Guanine are the pyridmidine, which have one organic ring, Adenine and Thymine are paired with a double bond and Cytosine and Guanine with a triple. The answer to the question is D.

2007-01-01 13:06:11 · answer #2 · answered by Crystal B 3 · 0 0

Question One
The S phase, short for synthesis phase, is a period in the cell cycle during interphase, between G1 phase and the G2 phase. Following G1, the cell enters the S stage, when DNA synthesis or replication occurs. At the beginning of the S stage, each chromosome is composed of one DNA double helix molecule, which is called a chromatid. At the end of this stage, each chromosome has two identical DNA double helix molecules, and therefore is composed of two sister chromatids. During S phase, the centrosome is also duplicated. These two events are unconnected, but require many of the same factors to progress. The end result is the existence of duplicated genetic material in the cell, which will eventually be divided into two. The answer is C.

Question 2
A is not always true, B is never true, andc is not true. The answer is D.

Question 3
DNA is a long polymer of simple units called nucleotides, which are held together by a backbone made of sugars and phosphate groups. In the space at the centre of the stacked bases are three chelated potassium ions. The answer is A.



In the future, do your own research/homework.

2007-01-01 09:27:37 · answer #3 · answered by mizz_milk06 4 · 1 0

Here's something for you to think about:

Q1 - B, because it is the base pair "complimentariness" which allows for a string of RNA to be duplicated, and from this, eventually a new, identical DNA string.

Q2 - B, with 2 provisos, 1-Pattern baldness in males can only be inherited from the mother, since she provides the only X chromosome for her son. and 2.The answer does not preclude daughters inheriting baldness via the X chromosome from their father. Otherwise the answer is ambiguous, hence D must be the answer.

Q3 - C, Potassium is chelated, and hence not part of the molecule, per se. The others are all part of the DNA molecule. The sugar being Deoxyribose.

2007-01-01 09:43:15 · answer #4 · answered by Terracinese 3 · 0 1

sturdy question...and lots of sturdy solutions. My answer: It varies. i will attempt to respond to severe question. i don't get entangled with "Who could win a combat interior the shallow end of a swimming pool: A shark or a polar undergo?" (That became a real question.) or perhaps many of the "Who could win: Bruce Lee or xxx?" If I do answer, it somewhat is often to show out that Lee is lifeless and xxx would not have a perplexing time beating a rotted corpse. frequently, i don't do lots examine. I answer questions i comprehend the solutions to. I even tend to do examine while somebody is looking a severe question approximately which gymnasium or dojo seems ultimate. i will shop on with the hyperlinks, check out the web pages, and supply an answer. As others have mentioned, i will oftentimes basically do examine if it will help me or my expertise of something. sure, i'm getting very pissed off while somebody possibilities an answer very almost on the instant...even while that answer is an extremely poor one. for that reason, right here and on another sites the place I answer questions (Trulia, Zillow--i'm additionally into authentic property), I start up with the latest questions and artwork my some time past. it is not probably to get a "ultimate answer" award yet extremely to offer a sturdy answer initially. If different human beings have extra helpful solutions, large. yet via the time a question has 6 or 8 or extra solutions (mockingly, like this one), the percentages of my enter being seen drops appreciably. I rejoice with earning factors. yet--as regulars right here probably be conscious--I in lots of cases supply an answer yet start up with "XXX offered an incredible answer. you will desire to provide him the 'ultimate answer' award." and that i additionally learn lots right here from examining the different solutions. i'm maximum efficient interior the climate of BJJ, grappling, MMA, and wrestling. i'm weaker in--have extra to income approximately--classic martial arts. So I rejoice with the discussions on those subjects. right here on Yahoo, I additionally am extremely energetic in "words and Wordplay" and the different employer, finance, and authentic property components. I be conscious quite lots a similar critera there. yet in those (extremely "words and Wordplay"), lots of youngsters are asking homework questions. in the event that they actually don't comprehend something, i will attempt to describe it. yet I draw the line while somebody posts 0.5 a dozen homework questions and easily needs somebody else to do the artwork. desire that facilitates.

2016-10-19 08:06:21 · answer #5 · answered by saleh 4 · 0 0

1.) b... the DNA double helix splits and each half makes a complementary copy
2.) b... males get their X chromosome from mom
3.) c...what can I say, there's no potassium

2007-01-01 09:43:41 · answer #6 · answered by ivorytowerboy 5 · 1 0

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