<span>Mutation in the gene encoding the recently isolated WASP protein has now been identified as the genetic defect responsible for the X-linked Wiskott-Aldrich syndrome (WAS), a primary immunodeficiency disease associated with extensive phenotypic variability.</span>
I believe it is B. Hope this helps!!
Answer:
B
Explanation:
Tertiary structure is the overall three-dimensional structure resulting from folding and covalent cross-linking of a protein or polynucleotide molecule. This is what is explained in this question.
Phoebus Levene was the one who proposed <span>the polynucleotide model stating that dna and rna were composed</span>
Plants absorb water from the soil by osmosis. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
Uptake occurs around the root tip, into epidermal cells with their associated root hairs and into cells in the outer layers of the root cortex.
