Answer:
smooth muscle
Explanation:
Smooth muscles are one of the three types of muscles based on anatomy, location, and regulation. Smooth muscles lack the striations which are otherwise present in skeletal and cardiac muscle tissue. The absence of striations makes them look nonstriated, which is why they are referred to as smooth.
The action of smooth muscle is usually involuntary and is under the regulation of autonomic (involuntary) division of the nervous system and the hormones released by endocrine glands. T tubule is the extension of sarcolemma into the skeletal muscle fiber and is involved in the conduction of impulses. It is absent in smooth muscles.
A would be the correct choice here
Oryza Sativa is the scientific name for rice
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.