neurotransmitters is the answer
Answer:
Chromosome number variation: B. Down syndrome
Loss-of-function allele : D. PKU
Physiological trait
: E. Lactose metabolism
Discovery-based science
: A. Human Genome Project
Genetic cross: C. Model organism
Explanation:
Down syndrome is a condition in which there is an extra copy of the chromosome number 21. Hence, it is a chromosome number variation.
Physiological traits refers to any function of a body. Hence, it matches with lactose metabolism.
Human Genome Project was a project under which the whole genome of the humans were sequenced. Hence, it is a discovery based science.
A genetic cross is made between model organisms to test for the offsprings that would be produced from a cross. Hence, genetic cross and model organism math with each other.
It is known as Tower Triangulation. Hope this helps! :)
The parts of one nucleotide a nitrogenous bases (labels C and D), a pentose sugar (labels B and E) and phosphate group (labels A and F).
<h3>What is a nucleotide?</h3>
A nucleotide is a building block of nucleic acids (either DNA or RNA) that form the genetic material of an individual.
Phosphate groups form the backbone of the double helix and bind to pentose sugars in adjacent nucleotides.
Nitrogenous bases bind opposite DNA strands by hydrogen bonds, they include Adenine (A), Guanine (G), Cytosine (C) and Thymine (T).
In this case, the labels include:
- Label A: phosphate
- Label B: deoxyribose sugar
- Label C: nitrogenous base
- Label D: nitrogenous base
- Label E: ribose sugar
- Label F: phosphate
In conclusion, the parts of one nucleotide a nitrogenous bases (labels C and D), a pentose sugar (labels B and E) and phosphate group (labels A and F).
Learn more about nucleotides here:
brainly.com/question/1569358
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