WorksheetsBiology: Meiosis and Mendelian Genetics Review
Total questions: 33
Worksheet time: 17mins
Crossing over is
important in genetic recombination
what makes a cell become cancerous
a key process that occurs during mitosis
an important mechanism in chromosome repair
If the diploid number of carrots is 18, the haploid number is
18
9
27
36
During which stage of meiosis does the tetrad AND crossing over occur?
interphase I
prophase I
prophase II
none of the above
When chromosomes cross over they form what?
A tetrad
A spindle fiber
A chromatid
Gregor Mendel used pea plants to study...
flowering
gamete formation
the inheritance of traits
cloning
The “factors” that are passed from parent to offspring and determine traits are called...
genes
characteristics
traits
alleles
The principle of dominance states that...
all alleles are dominant.
all alleles are recessive.
some alleles are dominant and others are recessive.
alleles are neither dominant nor recessive.
A tall plant is crossed with a short plant. If the tall F1 pea plants are allowed to self-pollinate,
the offspring will be of medium height.
all of the offspring will be tall.
all of the offspring will be short.
some of the offspring will be tall, and some will be short.
Organisms that have two identical alleles for a particular trait are said to be...
homozygous
dominant
heterozygous
hybrid
When Gregor Mendel crossed a tall plant with a short plant, the F1 plants inherited...
an allele for tallness from each parent.
an allele for tallness from the tall parent and an allele for shortness from the short parent.
an allele for shortness from each parent.
an allele from only the tall parent.
A pea plant that has two different alleles for the same trait is said to be..
polygenic
heterozygous
homozygous
heptazygous
The different forms of a gene are called...
chromatids
genes
alleles
homologous chromosomes
What do we know about two plants with the genotypes TT and Tt?
would have the same phenotype
have all dominant alleles
would have different phenotypes
have all recessive alleles
What would AA be considered?
homozygous dominant
homozygous recessive
heterozygous
What would Ee be considered?
homozygous dominant
homozygous recessive
heterozygous
What would rr be considered?
homozygous dominant
homozygous recessive
heterozygous
What would Ff be considered?
homozygous dominant
homozygous recessive
heterozygous
What would bb be considered?
homozygous dominant
homozygous recessive
heterozygous
Having horns is dominant (H) to not having horns (h) in bulls. The genotype HH would have the phenotype?
With horns.
Without horns.
Having horns is dominant (H) to not having horns (h) in bulls. The genotype Hh would have the phenotype?
With horns.
Without horns.
Having horns is dominant (H) to not having horns (h) in bulls. The genotype hh would have the phenotype?
With horns.
Without horns.
For each phenotype, select ALL possible genotypes if
round heads (R) are dominant to pointed heads (r) if you have a ROUND head.
RR
Rr
rr
For each phenotype, select ALL possible genotypes if
round heads (R) are dominant to pointed heads (r) if you have a POINTED head.
RR
Rr
rr
