Plant species A has a diploid chromosome number of 12. Plant species B has a diploid number of 16. A new species, C, arises as an allopolyploid from A and B. The diploid number for species C would probably bea. 14.b. 16.c. 28.d. 56.

Alternate forms of the same gene are called:

a) Chromatids.

b) Centromeres.

c) Chromosomes.

d) Alleles.

A cell that has 2 copies of each chromosome is called a __________ cell:

a) Sperm.

b) Diploid.

c) Haploid.

d) Gamete.

All human cells, except sex cells, are diploid and have 23 pairs of chromosomes. Human sex cells, such as egg and sperm, are haploid and have _______ chromosomes.

a) 23

b) 12

c) 11.5

d) 46