Cell Cycle
Which stage of the cell cycle is when the cell grows and prepares for division?
A Interphase
B Mitosis
C Cytokinesis
What is the physical appearance of an organism called?
A Genotype
B Phenotype
C Allele
Which process produces gametes?
A Mitosis
B Meiosis
C Cytokinesis
Which molecule contains instructions for building proteins?
A RNA
B DNA
C Lipid
What tool predicts inheritance patterns between parents?
A Punnett square
B Codon chart
C Karyotype
Which stage of the cell cycle is when the cell grows and prepares for division?
A Mitosis
B Meiosis
C Replication
What is the genetic makeup of an organism called?
A Genotype
B Chromosome
C Phenotype
Cells produced by meiosis are
A Diploid
B Haploid
C Identical
Which structure assembles amino acids into proteins?
A Ribosome
B Chromosome
C Gene
If two heterozygous parents (Aa × Aa) cross, what percent of offspring show the recessive phenotype?
A 25%
B 50%
C 75%
What process divides the cytoplasm after mitosis?
A Replication
B Cytokinesis
C Crossing over
Different forms of the same gene are called
A Proteins
B Alleles
C Chromosomes
Which event increases genetic variation during meiosis?
A DNA replication
B Cytokinesis
C Crossing over
Which RNA molecule carries genetic instructions from DNA to the ribosome?
A tRNA
B rRNA
C mRNA
If TT is crossed with tt, what will all offspring be?
A TT
B Tt
C tt
Which type of cell division produces genetically identical daughter cells?
A Mitosis
B Meiosis
C Fertilization
If an organism has genotype Aa, it is described as
A Homozygous
B Heterozygous
C Diploid
Homologous chromosomes are
A Chromosomes that carry the same genes
B Identical proteins
C RNA molecules
Which RNA molecule carries amino acids to the ribosome?
A mRNA
B tRNA
C rRNA
What genotype produces a recessive phenotype?
A AA
B Aa
C aa
Why must DNA replicate before cell division?
A To ensure each new cell receives identical genetic information
B To remove chromosomes
C To prevent mutations
Which statement best describes a dominant allele?
A It is always inherited from the mother
B It is expressed when present
C It disappears during meiosis
Which process ensures different combinations of genes in gametes?
A Independent assortment
B DNA replication
C Cytokinesis
A three-base sequence on mRNA that codes for an amino acid is called a
A Codon
B Allele
C Chromosome
Why can siblings from the same parents look different?
A Genes are inherited randomly
B DNA disappears
C Chromosomes stop dividing