The thyroid hormone triiodothyronine (T3) causes apoptosis of muscle cells in the tail BUT causes muscle cell growth and differentiation in the limbs of tadpoles. a. True
b. False

several tissues working together form an organ, and several organs together make up an organisms.

the group of cell that carries out special jobs are tissue.

what is this saying?

the answer to the blank provided is “an autosomal gene that is required for the expression of genes on the x chromosome”.

testis-determining factor, abbreviated as td, which is more popularly known as sex-determining region y or sry protein, is a dna-binding protein or  gene-regulatory protein/transcription factor, encoded by the  sry gene. it is the gene responsible for the initiation of male gender determination in humans.

answer biotechnology;