Hydrogen bonds are the forces that hold two DNA strands together in a double helix.
Deoxyribonucleic acid, also known as DNA, is made up of two lengthy strands that loop around one another to form a double helix. The nitrogenous bases of the DNA's nucleotides form hydrogen bonds with one another, holding the two strands together.
The four nucleotide bases adenine (A), thymine (T), cytosine (C), and guanine (G) make up DNA. Adenine and thymine make hydrogen bonds, and cytosine and guanine do the same. Adenine always couples with thymine, and cytosine always pairs with guanine, forming unique and complementary hydrogen bonds.
Learn more about DNA double helix:
The bonding forces between two DNA strands in a double helix are hydrogen bonds that occur between the base pairs. DNA bonding hold the two strands together, enabling the DNA double helix to act as the stable carrier of genetic information.
The bonding forces between two DNA strands in a double helix are known as hydrogen bonds. These bonds occur between the base pairs in the DNA sequence. For each base pair, adenine (A) bonds with thymine (T) through two hydrogen bonds, and guanine (G) bonds with cytosine (C) through three hydrogen bonds. These hydrogen bonds are what hold the two strands of the DNA double helix together, allowing it to function as the stable carrier of genetic information.
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oxygen
family
all of the above
Answer:
are reproductively isolated
Explanation:
The genetic drift represents a change in the frequency of an already existing gene variant in a population as a consequence of random sampling of organisms. The offspring would have the genes from their parents, and because the population is limited in numbers and it has been exposed to a new environment, the individuals with advantageous traits will survive and reproduce, while the others will die out gradually. This occurs when a small population of some species is reproductively isolated. The genetic variation is very small because of the small number of individuals, so only certain genes are passed on tot he offspring, thus resulting in gradual changes that will eventually lead to the creation of a separate species.
(B) all have an internal skeleton
(C) all have an exoskeleton
(D) only some have jointed appendages
Answer:
C. All have an exoskeleton
Explanation:
Crustaceans is a subphylum
of Arthropoda. The study of crustaceans is knows as carcinology or crustaceology.
They are important sources of food and they consist of crabs, crayfish, prawns etc. They are closely related to insects in terms of morphological(structural) features.
Crustaceans have varying numbers and structure of appendages. However they lack endoskeletons and possess exoskeletons.
Answer:
A
Explanation:
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b. elevation
c. proximity to water
d. air and water currents
b. 4 bases at a time in the same direction.
c. 3 bases at a time and the direction varies.
d. 4 bases at a time and the direction varies.
The genetic code is read 3 bases at a time in the same direction. These 3-base sequences in DNA are referred to as codons and each one codes for a specific amino acid. This is essential during the process of protein synthesis.
The genetic code is indeed always read 3 bases at a time in the same direction, which simply means, the answer is 'a. 3 bases at a time in the same direction'. This 3-base sequence in DNA is called a codon. Each codon is responsible for coding a specific amino acid. For example the codon UGA signals to stop protein synthesis. Genetic code reading is a vital part of the protein synthesis process, specifically during the translation phase where the genetic code in mRNA is translated into a sequence of amino acids to form a protein.
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