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Worksheetspractice EOCT
Total questions: 168
Worksheet time: 2hrs 13mins
Perform a dihybrid cross of two heterozygous parents (RrYy)
What fraction of offspring should be expected to be smooth and green?
Which event during meiosis leads to a reduction in chromosome number from 2n to n?
pairs of homologous chromosomes line up at the equator
DNA undergoes replication
homologous chromosomes travel to opposite sides of the cell
sister chromatids are pulled apart at the centromere
Which is the best description of the events that take place during anaphase II?
the replicated chromosomes become visible
homologous chromosomes line up along the equator
sister chromatids are separated and pulled to opposite sides of the cell
homologous pairs are separated and pulled to opposite sides of the cell
The typical human body cell contains 46 chromosomes. How many chromosomes are found in a typical human sperm?
23
45
46
92
During which phase of meiosis do homologous pairs of chromosomes line up next to one another along the equator?
anaphase I
metaphase I
prophase II
metaphase II
If two heterozygous individuals are crossed, what percent of their offspring are also expected to be heterozygous?
0
50
75
100
Recessive alleles may not be expressed because they are
masked by a dominant allele
the least common allele in a population
the most common allele in a population
less likely to have crossing over
Some flowers are controlled by codominance. Red flowers (RR), blue flowers (BB) and Speckled flowers (RB).
Cross a red flower with a blue flower.
1 red, 2 speckled, 1 blue
2 red, 2 blue
4 speckled
1 red, 1 speckled, 2 blue
Which molecule is responsible for transferring an Amino Acid to the ribosome when building protein?
mRNA
DNA
RNA
tRNA
GTAGTCA
ATG GGA ACT CCA
During transcription, this type of ribonucleic acid is responsible for copying the DNA and brining it out of the nucleus.
tRNA
mRNA
rRNA
dRNA
Which of the following are differences in the structure between RNA and DNA
DNA uses deoxyribose sugar, RNA uses sugar ribose
DNA pairs Adenine with Uracil, RNA pairs Adenine with Thymine
DNA is a double helix, RNA is a single helix
DNA pairs Adenine with Thymine, RNA pairs Adenine with Uracil
These building blocks consist of a sugar, phosphate, and nitrogen base.
Ribose
Nucleotide
Gene
Protein
How many amino acids are found on one tRNA?
20
4
1
3
Which of the following would the codon that this molecule of tRNA will bind to?
ATC
CUC
GAG
CTC
What type of cells does meiosis produce?
2 Genetically identical cells
2 Genetically different cells
4 genetically identical cells
4 genetically different cells
Why are many plants green?
plant cells are green
plants absorb green light
chlorophyll reflects green light
rigid cell walls are green
What substances and organelle work together to absorb sunlight to perform photosynthesis in this example?
