Answer: The correct option is B.
Chromosomes contain genes that tell the body how to grow and work.
Explanation:
This is because chromosomes contain alot of human genes which are found in the nucleus and every humans have 23 pairs of chromosomes. The sets of genes determines some of the body features, characteristics or traits. The genes in the body form the genotype and the genotype is expressed physically which is now the phenotype i.e traits expressed physically in the body which is an indication of body appearance.
A. a steel beam. All of the rest of them change shape or volume whereas a steel beam with never change in volume or shape.
Answer:
D. 2 m/s²
Step-by-step explanation:
Initial speed of the runner (u) = 6 m/s
Final speed of the runner (v) = 14 m/s
Time taken (t) = 4 s
By using equation of motion, we get:

Acceleration of the runner (a) = 2 m/s²
It goes in the downward direction
True. The mass of an electron is about 1/2000 amu whereas the mass of a proton is 1 amu.