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WorksheetsUnit 2 Science Study Guide 7th grade
Total questions: 35
Worksheet time: 18mins
Who discovered genetics and what did he use to study genetics?
Thomas Edison; Bacteria
Albert Einstein, Pea Plants
Gregor Mendel, Bacteria
Gregor Mendel, Pea Plants
Which is NOT one of the three Laws of Inheritance?
Law of Dominance
Law of Genetics
Law of Segregation
Law of Independent Assortment
Which answer does not belong with the characteristics of DNA?
Carries genetic information needed for the organism to grow, reproduce, etc.
It is a double-stranded molecule
Stable under alkaline conditions
genetic information is used to bring together amino acids to form a protein
Which answer does NOT belong in the characteristics of RNA?
It is a double-stranded molecule
carries genetic information is used to bring together amino acids to form a protein
the genetic material in all living cells
Is not stable under alkaline conditions
Which is NOT a nucleotide found in DNA molecule?
Cytosine
Uracil
Adenine
Thymine
Which is NOT a nucleotide found in a RNA molecule?
Uracil
Guanine
Adenine
Thymine
The physical structure in a cell that contains the cell's genetic material is a
meiosis
chromosome
trait
phenotype
How many chromosomes do humans have
23
46
2
12
The male chromosomes are_____; the female chromosomes are ___.
XX; XY
XX; XX
XY; XY
XY; XX
The physical appearance of an organism is its
locus
phenotype
allele
karyotype
Which term describes a type of cellular reproduction where the nucleus divides two producing identical copies of the cell?
mitosis
meiosis
heterozygous
homozygous
A type of reproduction that produces offspring that are genetically alike (identical)
asexual
sexual
homozygous
heterozygous
A type of reproduction that produces offspring that are genetically different?
asexual
homozygous
sexual
heterozygous
What is used to show all the different ways genes from two parents can combine to pass their traits to the offspring?
Purebreed
Hybrid
Pedigree Chart
Punnett Square
Which answer best describes a pedigree chart?
A chart that follows a particular trait family relationships including 3 or more generations.
A chart that shows how genes from parents are passed down
A family tree that is purebreed
An allele expressed in a family tree
What is purpose of selective breeding?
to prevent diseases in the offspring
to produce offspring that is identical to the parents
to produce offspring that will have certain traits
to determine the sex of the offspring
Which type of cellular reproduction produces two identical cells?
meiosis
locus
mitosis
allele
Which type of cellular reproduction allow cells to inherit traits from both parents?
Meiosis
Mitosis
Cytokinesis
Chromosomes
Which step of cell division is the cell not dividing, but is growing and duplicating its DNA and preparing for division to begin?
Interphase
Prophase
Metaphase
Cytokinesis
Which term indicates the chromosomes are lined up in the middle of the cell
Interphase
Prophase
Metaphase
Anaphase
Which term indicates the separated chromosomes are pulling to the opposite ends of the cell
Interphase
metaphase
anaphase
cytokinesis
At the end of mitosis, two identical cells have formed. What stage does this represent?
Interphase
Prophase
Anaphase
Cytokinesis
Which term refers to the location of a gene on the chromosome?
locus
allele
phenotype
ctyokinesis
Which term describes the various forms of a gene on the locus?
chromosomes
alleles
dominant
recessive
When making a Punnett Square, one can determine the homozygous and heterozygous pairs. If there are two dominant or two recessive genes paired together, you will have which of the following?
selective breeding
homozygous
heterozygous
meiosis
The offspring of two heterozygous parents results in
hybrid offspring
purebreed offspring
locus
alleles
The offspring of two homozygous parents results in
hybrid offspring
purebreed offspring
locus
alleles
A dominant gene is written on the Punnett Square by using
a red color
a black color
a lower case letter
a capital letter
Two lower case letters in a Punnett Square indicates
Two genes carrying dominant traits
Homozygous genotype
Heterozygous genotype
\the offspring will be a male
Two upper case letters in a Punnett Square indicates
Heterozygous genotype
Homozygous genotype
mitosis
meiosis
A picture of a person's 23 pairs of chromosomes is called
karyotype
phenotype
genotype
gamete
The same type of genes are located on the chromosomes at the
alleles
genotype
karyotype
Locus
In guinea pigs, the allele for black fur (B) is dominant, and the allele for brown fur (b) is recessive. If a BB male mates with a Bb female, what percentage of the offspring are likely to have black fur?
100 percent
75 percent
50 percent
twenty-five percent
Is the genotype "BB"
homozygous
heterozygous
recessive
osmosis
Which is an example of something that reproduces asexually
fish
apple tree
bacteria
all of the above
