Genome Review

What causes SNPs(single nucleotide polymorphisms)?

• point mutations

• gene flow

• sexual reproduction

• dna replication

Answer explanation

Errors in DNA replication cause different alleles to be created which produce SNPs. This is why they are often markers for certain diseases.

All genetic info of an individual and/or a group of organisms is a _______.

What do you call genes that serve no purpose?

• gene

• allele

• junk dna

• SNPs

Genome size is measured in base pairs.

• True

• False

What is an example of a gene that has no changed between species?

• there are none.

• cytotoxic

• white blood cell

• protein cytochrome c

What is a gene?

• a type of cell

• a form of energy

• a length of dna

• a type of virus

Is the number of chromosomes in plant and animal cells, even or odd?

What do two gametes produce?

• placenta

• zygote

• fetus

• embryo

An autosome is a sex chromosome.

• true

• false

What is the distinguishable feature that tells a female from a male with a karyotype?

• number of autosomes

• presence or absence of the Y chromosome on the 23rd pair of chromosomes

• presence or absence of the X chromosome on the 23rd pair of chromosomes

• length of telomeres