Skip to main content
Ch. 1 - The Molecular Basis of Heredity, Variation, and Evolution
Sanders - Genetic Analysis: An Integrated Approach 3rd Edition
Sanders3rd EditionGenetic Analysis: An Integrated ApproachISBN: 9780135564172당신이 사용하는 게 아니라요?교과서 변경
1장, 문제 29b

Consider the following segment of DNA:
    5'-...ATGCCAGTCACTGACTTG...-3'
    3'-...TACGGTCAGTGACTGAAC...-5'
How many hydrogen bonds are present in this DNA segment?

검증된 단계별 안내
1
Identify the base pairs in the given DNA segment. Recall that adenine (A) pairs with thymine (T) and guanine (G) pairs with cytosine (C).
Count the number of A-T base pairs in the DNA segment. Each A-T pair forms 2 hydrogen bonds.
Count the number of G-C base pairs in the DNA segment. Each G-C pair forms 3 hydrogen bonds.
Multiply the number of A-T pairs by 2 to calculate the total hydrogen bonds contributed by A-T pairs.
Multiply the number of G-C pairs by 3 to calculate the total hydrogen bonds contributed by G-C pairs. Add the results from steps 4 and 5 to determine the total number of hydrogen bonds in the DNA segment.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.
영상 길이:
1m
도움이 되었나요?

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Base Pairing in DNA

DNA consists of two strands that are held together by hydrogen bonds between complementary bases. Adenine (A) pairs with Thymine (T) through two hydrogen bonds, while Guanine (G) pairs with Cytosine (C) through three hydrogen bonds. Understanding this base pairing is essential for calculating the total number of hydrogen bonds in a given DNA segment.
추천 영상:

DNA Structure

DNA has a double helix structure, where two strands run in opposite directions (antiparallel). Each strand is composed of nucleotides, which include a sugar, a phosphate group, and a nitrogenous base. Recognizing the antiparallel nature of the strands is crucial for identifying the correct base pairs and their corresponding hydrogen bonds.
추천 영상:

Counting Hydrogen Bonds

To determine the total number of hydrogen bonds in a DNA segment, one must identify the base pairs present and apply the specific bonding rules: A-T pairs contribute two hydrogen bonds, while G-C pairs contribute three. By analyzing the sequence of bases in the provided DNA segment, one can accurately count the total hydrogen bonds formed.
추천 영상:
관련 실천
교과서 질문

Ethical and social issues have become a large part of the public discussion of genetics and genetic testing. Choose two of the propositions presented here and prepare a list of arguments for and against them.

The results of genetic testing for susceptibility to cancer, heart disease, and diabetes should be available to insurance companies and current or prospective employers to provide more information for decision-making.

398
views
교과서 질문

If one is constructing a phylogeny of reptiles using DNA sequence data, which taxon (birds, mammals, amphibians, or fish) might be suitable to use as an outgroup?

1377
views
교과서 질문

Consider the following segment of DNA:

    5'-...ATGCCAGTCACTGACTTG...-3'

    3'-...TACGGTCAGTGACTGAAC...-5'

If the lower strand of DNA serves as the template transcribed into mRNA, how many peptide bonds are present in the polypeptide fragment into which the mRNA is translated?

598
views
교과서 질문

Consider the following segment of DNA:

    5'-...ATGCCAGTCACTGACTTG...-3'

    3'-...TACGGTCAGTGACTGAAC...-5'

How many phosphodiester bonds are required to form this segment of double-stranded DNA?

577
views
교과서 질문

Ethical and social issues have become a large part of the public discussion of genetics and genetic testing. Choose two of the propositions presented here and prepare a list of arguments for and against them.

Prenatal genetic testing and genetic testing of newborn infants should be available for hereditary conditions that can be treated or managed.

521
views
교과서 질문

What is meant by the term homology? How is that different from the meaning of homoplasmy?

1087
views