Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
28 Cards in this Set
- Front
- Back
|
Mitosis is most correctly defined as...
|
Nuclear division
|
|
|
During prophase of mitosis...
|
Nucleoli and the nuclear envelope begin to break down
|
|
|
A major characteristic that distinguishes meiosis from mitosis is...
|
The reduction of chromosome number during meiosis.
|
|
|
The single-ring nitrogen-containing organic bases of RNA and DNA are called...
|
Pyrimidines
|
|
|
In DNA replication, because each new strand contains half of the original strand, the process is said to be...
|
Semi-conservative
|
|
|
The linear form of RNA that is responsible for carrying a set of genetic instructions into the cytoplasm is...
|
mRNA
|
|
|
The initiation codon of mRNA is...
|
AUG
|
|
|
Genetics
|
The study of the transmission of biological information from on generation to the next.
|
|
|
The studies of ________ originated the modern study of genetics.
|
Mendel
|
|
|
In a genetic system of complete dominance, a recessive allele is expressed...
|
Only in the homozygous condition.
|
|
|
An organism is said to be ________ if it carries two identical alleles for a certain trait.
|
Homozygous
|
|
|
Punnett square
|
A tool used by geneticists to help predict results of crosses.
|
|
|
Gametes
|
Sperm and egg
|
|
|
Zygotes
|
Union of sperm and egg at fertilization
|
|
|
Somatic cells
|
Ordinary body cells (skin)
|
|
|
Haploid cells
|
Cells with half the number of chromosomes than in mitosis; part of meiosis.
|
|
|
Incomplete Dominance
|
Two alleles are expressed more or less equally - i.e. red cattle x white cattle --> Roan (red and white) cattle
|
|
|
Codominance
|
Heterozygote expressed the phenotype of both homozygotes
|
|
|
Phenotype
|
Visual expression of genes - the trait we see
|
|
|
Genotype
|
Genetic makeup of a trait
|
|
|
Chromosomes which are not involved in the determination of sex are called...
|
Autosomes
|
|
|
The somatic cells of animals are normally in the __________ condition.
|
Diploid
|
|
|
With respect to X-linked traits, males can be described as...
|
Hemizygous
|
|
|
An error known as __________, which may occur during meiosis, will result in gametes having a lesser or greater number of chromosomes than normal.
|
Nondisjunction
|
|
|
Nondisjunction
|
An error that may occur during meiosis, will result in gametes having a lesser or greater number of chromosomes than normal.
|
|
|
A/An________ can be defined as a sequence of bases in DNA that codes for the synthesis of one polypeptide.
|
Gene
|
|
|
The form of RNA that carries amino acids to ribosomes and helps position them for incorporation into a polypeptide is...
|
tRNA
|
|
|
Alleles are...
|
Alternate forms of a gene.
|
