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WorksheetsIntroduction to Genetics
Total questions: 23
Worksheet time: 23mins
Name
Class
Date
1.
The different forms of a gene are called
a)
traits
b)
pollinators
c)
alleles
d)
hybrids
2.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
co-dominance
c)
complete dominance
d)
recessive pattern
3.
Which of the following distances between linked genes would have the greatest chances of crossing over?
a)
22 map units
b)
10 map units
c)
15 map units
d)
2 map units
4.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
5.
inheritance pattern in which a heterozygote expresses the distinct traits of both alleles
a)
codominance
b)
intermediate inheritance
c)
genetic locus
d)
sex linked gene
6.
When an area of a chromatid is exchanged with the matching area on a chromatid of its homologous chromosome, _________________ occurs
a)
crossing over
b)
mutagenesis
c)
hybridization
d)
fertilization
7.
What kind of cells are made in MEIOSIS?
a)
Haploid Gametes
b)
Diploid Somatic Cells
c)
Skin Cells
d)
Liver Cells
8.
If a somatic cell in a butterfly contains 24 chromosomes, a butterfly egg would contain
a)
3
b)
6
c)
12
d)
24
9.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
10.
The chromosomes that pair up during meiosis, are called __________ chromosomes.
a)
homozygous
b)
asexual
c)
homologous
d)
genes
11.
The physical appearance of the allele combination the offspring receives
a)
genotype
b)
homozygous
c)
phenotype
d)
dominant
12.
Phenotypes which result as a combination of MANY genes, such as skin color and eye color, are known as ______________ traits.
a)
Monogenic
b)
Dihybrid
c)
Multiple Allele
d)
Polygenic
13.
Freckles (F) are dominant over nonfreckles. What is the phenotype of individual #3
a)
Ff
b)
ff
c)
freckles
d)
nonfreckles
14.
What phase is shown in the picture?
a)
anaphase 1
b)
anaphase 2
c)
metaphase 1
d)
telophase 1
15.
What is the advantages of reproducing sexually instead of asexually?
a)
easy to find a partner
b)
to create identical cells
c)
to create genetic diversity
d)
there are no advantages
16.
If red flowers (R) are dominant over white, what is the probability that the offspring will be red?
a)
1 out of 4
b)
2 out of 4
c)
3 out of 4
d)
4 out of 4
17.
Round seeds (R) are dominant to wrinkled seeds (r). What is the genotype for a wrinkled offspring?
a)
RR
b)
Rr
c)
rr
18.
The law of independent assortment states that the inheritance of alleles for one trait is not affected by the inheritance of alleles for a different trait if the genes for the traits are on
a)
separate chromosomes
b)
homologous chromosomes
c)
the same chromosome
d)
homozygous chromosomes
19.
When forming sex cells, the paired alleles separate so that each egg or sperm only carries one form of the allele
a)
principle of independent assortment
b)
principle of segregation
c)
law of dominance
d)
law of recessiveness
20.
What are separated during the meiosis I?
a)
sister chromatids
b)
homologous chromosomes
c)
centrioles
d)
cytoplasms
21.
When two or more alleles for a trait exist in a population. Ex: Different hair colors
a)
Polyploidy
b)
Multiple Genes
c)
Multiple Alleles
d)
Polysaccharide
22.
Which out of the following is one difference between Mitosis and Meiosis?
a)
Meiosis produces somatic cells and mitosis produces gametes.
b)
Meiosis has 3 rounds of cell division and mitosis had 2 rounds of cell divison.
c)
Mitosis creates 2 identical cells and meiosis creates 4 haploid cells
d)
Unlike meiosis, mitosis produces haploid cells
23.
Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?
a)
Brown Hair
b)
Blonde Hair
c)
Brown and Blonde Hair
d)
Black Hair
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