Explanation:
Answer:
DNA is composed of two side-by-side chains (“strands”) of nucleotides twisted into the shape of a double helix. ...
The bases are attached to the 1′ carbon of each deoxyribose sugar in the backbone of each strand. ...
The association of A with T and G with C is through hydrogen bonds
The answer is; electron microscope
This microscope has the highest resolution than the other hence able to view smaller molecules. The reason for its high resolution is because it uses a beam of electrons to view its specimen. A beam of electrons has a shorter wavelength (in order of 1000s of magnitude) compared to visible light. Therefore, this microscope is able to view the structure of DNA and proteins.
Answer:
The rectus abdominis muscle is the muscle that is located at the front of the abdomen; it is most often referred to as the ''abs.'' The action of this muscle pulls the rib cage and the pelvic bone towards the middle of the abdomen, just like the movement when a person performs a sit-up or crunch.
Explanation:
Answer:
%
Explanation:
Given
Cystic fibrosis is caused by the allele f, which is completely recessive to the normal dominant allele F. Thus if "F" and "f" occur together then the characteristics associated with allele "F" will be expressed.
Or a person having cystic fibrosis must have genotype "ff"
A punnet square cross between the parents having genotype "Ff" is as given below-
F f
F FF Ff
f Ff ff
Thus, out of four offspring only one is having the "ff" genotype. Thus the
chance that their second child will have cystic fibrosis is
%
