Question

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

Answer 1

The only one that should not be selected is "are carried on genes" since genes are segments of DNA that code for something. Like one of the answers said, chromosomes carry thousands of genes, making the statement, "are carried on genes," completely false. 

Answer 2

The correct answer would be:

• are tight coils of DNA
• can be analyzed in a karyotype

Chromosome refers to the most condensed form of the DNA. It is a threadlike structure of DNA and associated proteins found in the nucleus of a cell.

DNA is tightly coiled around the associated proteins such as histone proteins in humans.

A chromosome can carry 100 to 100 number of functional genes.

Karyotype refers to the organized profile of chromosomes of an individual. It shows the number and visual appearance of all the chromosome present in the cell of an individual. It helps in detecting a variety of genetic disorders.