Select all that apply. chromosomes are tight coils of dna are carried on genes always occur in pairs can be analyzed in a karyotype carry thousands of genes

In the sentence Chromosomes , the choices that correctly completes the sentence are: are tight coils of DNA; can be analyzed in a karyotype; carry thousands of genes. Chromosomes are tight coils of DNA. It is a thread-lice structure into which DNA molecule is tightly packed around proteins. A section of a chromosome that typically contains the code for a particular protein is called a gene. Chromosomes carry thousands of genes. A test used to identify an organism's chromosomal makeup and to detect genetic defects is called karyotype.

Ithink it's a, but i might be wrong