HeLa cells maintain a constant number of chromosomes like normal cells, typically 46 chromosomes.

HeLa cells have fewer chromosomes than normal cells, which helps them replicate more efficiently.

HeLa cells contain a stable number of chromosomes that are identical to those found in normal somatic cells.

HeLa cells exhibit a variable number of heavily mutated chromosomes, due to their cancerous origin.

0.7

1

0.9

0.5

0.8

Alleles of different genes do not interact during inheritance

Two genes on different chromosomes influence the same phenotype

Genes are located on different chromosomes and assort independently

Genes are located far apart on the same chromosome and assort independently

Two genes are located close together on the same chromosome and tend to be inherited together

0%

75%

100%

25%

50%

A tall plant and a short plant produce offspring that are of medium height.

A blue-eyed parent and a brown-eyed parent produce offspring with brown eyes.

A chicken with both black and white feathers from a cross between a black-feathered and a white-feathered parent.

A straight-haired dog and a curly haired dog produce a puppy with curly hair. 

Two green pea plants produce only green offspring.

A quarter of offspring have blue eyes and a long tail.

Three quarters of offspring have blue eyes and a long tail.

Half offspring have blue eyes and a long tail.

No offspring have blue eyes and a long tail. 

All offspring have blue eyes and a long tail.

Genotype 1:2:1, Phenotype 1:2:1

Genotype 1:2:1, Phenotype 2:1

Genotype 4:1, Phenotype 3:1

Genotype 3:1, Phenotype 1:2:1

Genotype 3:1, Phenotype 3:1

By using a hexose instead of a pentose sugar in the building blocks

By incorporating a non-complementary base

By using ribonucleotides instead of deoxy-ribonucleotides

By using RNA instead of DNA as a template 

By breaking a phosphodiester linkage in the DNA 

Deletion

Duplication

Inversion

Translocation

Insertion

Due to the ethidium bromide intercalating with DNA base pairs.

Because they have flagella and swim through the gel.

Because the buffer has a net negative charge.

All of the listed answers are correct. 

Due to the negatively charged phosphates in DNA nucleotides.