Various species of the flowering plant of the genus <em>Chrysanthemum </em>have 18, 36, 54, 72, and 90 chromosomes. The variation is likely due to polyploidy.
<h3>What is polyploidy?</h3>
Polyploidy can be defined as the number of complete sets of chromosomes in a given cell of an organism.
A diploid organism contains two complete sets of homo-logous chromosomes in its somatic cells.
Many organisms used polyploidy as an evolutionary strategy for adaptation to challenging environmental conditions.
Learn more about polyploidy here:
brainly.com/question/1237319
Answer:
ALS causes the motor neurons to gradually deteriorate, and then die. Motor neurons extend from the brain to the spinal cord to muscles throughout the body.
The
correct answer is no.
<span>The
development of retinoblastoma occurs as a consequence of mutation of genes RB1
or MYCN. Those mutations occur in the early stages of fetal development and affect
the way in which cells grow and develop within the body. The more common is the
defective RB1 gene that can be inherited from either parent. The expression of
the RB1 allele is autosomal dominant.</span>
