Answer:c) Radomized clinical trials
Explanation:Randomied clinical trial is a study used in scientific experiments in which the participants are divided randomly into group that compare different treatments or interventions.
Here participants are chosen by chance to receive clinical interventions.
Every living thing on earth evolved from a single cell organism
Answer:
TGAATGCGGCTA
Explanation:
The complementary DNA codes for A is T and for G its C
Fern spore germinates into prothallus.
Explanation:
Ferns are members of phylum pteridophyta, the vascular cryptogams.
These are first land plants which are known to have a distinct conducting system of xylem and phloem.
They reproduce by forming spores that germinates into a heart shaped gametophyte.
The gametophyte of the fern is called prothallus.
The heart shaped gametophyte has root like structure called rhizoids.
These rhizoids anchor the gametophyte to the substratum.
