Answer:
Option (d).
Explanation:
Karyotype may be defined as the process of the determining of the chromosome complement of the individual organism. The complete set of an organism's chromosome can be determined by karyotype.
The karyotype displays the each and every pair of homologous chromosome. The chromosomes are organised according to their shape and size. The abnormal chromosome can easily be determined by the karyotype.
Thus, the correct answer is option (d).
Plants get the carbon dioxide they need from the air through their leaves. It moves by diffusion through small holes in the underside of the leaf called stomata. These let carbon dioxide reach the other cells in the leaf, and also let the oxygen produced in photosynthesis leave the leaf easily.
Answer:

Explanation:
Gametes are sex cells, such as the egg and sperm. They are used in sexual reproduction to produce offspring.
The sex cells are produced during meiosis. The DNA or genetic material is replicated, then the cells divide twice. After this, four haploid cells are produced with <u>half of the genetic material</u>. For example, human body cells have 46 chromosomes but sex cells have 23 chromosomes.
They contain half the genetic material for an important reason. During fertilization, an egg and a sperm fuse. Each one contributes half of the genetic material from the mother or father to create one complete set for the offspring.
Gametes have <u>half the number of chromosomes in body cells</u> and <u>choice A </u> is correct.
In evolution, the study of vertebrate forelimbs is related to anatomical evidence.