Scheduled maintenance: Wednesday, February 8 from 10PM to 11PM PST
Upgrade to remove ads
Only $35.99/year

Practice Quiz 1

Terms in this set (10)

What would happen if, during meiosis, the chromosome number was not halved before egg and sperm formation?

each offspring would have different phenotypes than their parents
n would become halved
nothing
in each successive generation, the offspring would double their chromosome number
the spindle would be compromised
in each successive generation, the offspring would double their chromosome number
What is a mutation?

An inherited change in DNA sequences that is the source of all genetic variation
the source of all genetic variation
a change in DNA that leads to death
an inherited change in DNA sequence that is always bad for an organism
An inherited change in DNA sequences that is the source of all genetic variation
Which of the following is the function of DNA?

DNA is used structurally to hold the nucleus together
DNA is responsible for the storage and replication of genetic information
DNA serves to hold the information for protein, lipid, and carbohydrate storage
DNA is required when cells are using their ribosomes to translate a protein
DNA is involved in the expression of stored genetic information
DNA is responsible for the storage and replication of genetic information
Once a protein is made, its biochemical or structural properties play a role in producing________________

phenotype
mutant
chromosome
DNA
genotype
phenotype
Until the mid-1940s, many scientists considered proteins to be the likely candidates for the genetic material. Which of the following characteristics led scientists to believe DNA was NOT the genetic material?

DNA has less varation than protein
DNA is less abundant than protein
DNA is less abundant than protein and DNA has less variation than protein
Protein can fold into many shapes
DNA is less abundant than protein and DNA has less variation than protein
What is the homunculus?

a sperm or egg containing a miniature adult, perfect in size and proportion
a large cyst or growth on a plant due to viral infection
the intermidiate stage of the DNA after CRISPR-Cas treatment
a sperm or egg containing a miniature adult, perfect in size and proportion
What is another term for a biological catalyst?

ribosome
enzyme
lipid
protein
enzyme
If a scientist changed a cell's ionic composition and complementarity between DNA strands could no longer occur, what would the scientist first detect?

DNA becomes single stranded
cell membranes become less permeable
RNA would start binding to DNA
DNA becomes single stranded
When mutation alters a gene, it may modify or even eliminate the encoded protein's usual ________ and cause an altered ____________

cell type;genotype
ribosome;phenotype
function;phenotype
structure;genotype
function;phenotype
Genetics is the study of ____________

replication and recombination
mutation and recession
diploid and haploid
inheritance and variation
inheritance and variation
Students also viewed