The MOST Missed Questions from Genetics Test

In humans, the allele for the ability to roll the tongue is dominant over the allele for the inability to roll the tongue. If two parents who are homozygous dominant for this trait have 8 children, how many children would be expected to be unable to roll their tongues?

• 0

• 2

• 4

• 8

Sickle-cell anemia is caused by a mutation of one nucleotide in a gene. The type of mutation that causes sickle-cell anemia is known as

• frame-shift

• insertion mutation

• inversion mutation

• point mutation

Emma decides to study the tulips because they reproduce asexually. Which advantages do the tulips have over the snapdragons? Select all that apply.

• faster reproduction

• better able to adapt

• greater variation in traits

• no chance for mutations

• requires only one parent

Where does translation in prokaryotes occur?

• in the ER

• at the ribosomes

• outside the cell

• in the nucleus

Which of the following could be used to describe the end result of meiosis? Select 3.

• genetically identical

• geneticially unique

• haploid cells

• diploid cells

• four daughter cells are produced

Select all that are disadvantages to sexual reproduction. Select 3

• slower reproduction rate

• less reliable reproduction

• does not require fertilization

• takes time and energy to find mate

• children different from patents

A mutation of DNA by the addition or removal of a single nitrogen-containing base is known as a _____________ mutation which shifts the rest of the DNA sequence.

• substitution

• crossing over

• inversion

• frameshift

The sexually reproducing corn has kernels that are either purple or yellow, and smooth or wrinkled. Which of Mendel's laws does the farmer's corn best support?

• the law of segregation because each trait is inherited as a pair of genes

• the law of segregation because different genes are able to be inherited

• the law of independent assortment because only the dominant genes are inherited

• the law of independent assortment because genes for each trait are inherited separately

During transcription, the genetic information for making a protein is "rewritten" as a molecule of what? Look at the pink and green poster in the front of the room.

• messenger RNA

• ribosomal RNA

• transfer RNA

• translation RNA