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WorksheetsGen. Bio Genetics Test
Total questions: 33
Worksheet time: 17mins
A segment of DNA that controls a particular hereditary trait
monohybrid cross
gene
allele
heterozygote
A cross involving one pair of contrasting traits.
monohybrid cross
gene
allele
heterozygote
An alternative form of a gene
gene
allele
heterozygote
genotype
An organism having two different alleles for a trait
Gene
Allele
Heterozygote
Genotype
The genetic makeup of an organism
Gene
Allele
Heterozygote
Genotype
A contrasting form of a hereditary characteristic
Heredity
Homozygous dominant
Trait
Linked Genes
Having two similar, dominant alleles for a trait
Heredity
Homozygous dominant
trait
linked genes
The transmission of characteristics from parents of offspring
Heredity
Homozygous dominant
Trait
Linked traits
Genes found on the same chromosome
Homozygous dominant
Trait
Linked genes
Sex linked genes
Presence of a gene on a sex chromosome
Homozygous dominant
Trait
Linked genes
Sex linked genes
The following have several genes that act together to influence the trait; Eye color, hair and skin color, height, and weight. So what would they be?
multiple alleles
codominance
polygenic Traits
recessive traits
Which law states that alleles separate during formation of gametes.
Law of independent assortment
Law of segregation
Law of cheese
Rule of Dominance
Which of the following genotypes for color are NOT possible for a homozygous flower?
QQRR
Which genotype would a heterozygous individual have?
pp
mm
Zz
YY
In a cross between a homozygous dominant parent and a homozygous recessive parent, what would the offspring be?
1:1 homozygous dominant
3:4 homozygous dominant
1:4 homozygous recessive
all heterzygous
In a cross between two heterozygous parents, one would expect the offspring to be
1 pp: 3 PP
all Pp
1 PP: 3 pp
1 PP: 2 Pp: 1 pp
In cats black fur is dominant. If we cross a black cat with a white cat, and the litter contains a white offspring, what would the genotype of the black cat probably be?
homozygous dominant
homozygous recessive
heterozygous
Segregation/separation of alleles occurs during
pollination
meiosis
mitosis
protein synthesis
Two parents that express the dominant phenotype have an offspring expressing the recessive phenotype. What is the probable genotypes of the parents?
both parents are heterozygous
both parents are homozygous dominant
both parents are homozygous recessive
One parent is homozygous
If you cross a red apple with a yellow apple and you get orange apple offspring, what is the genotype of the offspring?
rr
RR
Rr
RRRR
If 2 genes are inherited together they were probably
separate
closely arranged
far apart
Genes that are inherited together tend to
be found only in males
be located apart from eachother
belong to the same linkage group
Sex-linked characteristics
occur most commonly in males
occur most commonly in females
is always fatal
don't matter
Mom and dad don't have sickle cell, but one of there daughters do. Which of the following is true?
Sickle cell anemia is caused by a dominant allele
all three children are carriers
Both parents are carry an allele for sickle cell
If purple flowers in pea-plants are the dominant, what is a way you can determine the genotype of the purple pea plant?
performing an experiment cross
performing a test cross
performing a dihybrid cross
ask the person you bought it from
Which of Mendel's laws is violated by linked genes?
Law of Segregation
Law of Dominance
Law of Independent Assortment
Law of heredity
If you cross a homozygous dominant parent (AA) with a homozygous recessive parent (aa) what would the genotypic ratio be?
100% (All same)
1:1
3:1
1:2:1
What would the phenotypic ratio be if you cross two heterozygous parents?
1:1
1:2:1
100% (All same)
3:1
The fur of a rabbit can be either black (BB), grey (Bb), or white (bb). Based on the genotypes, what color were the two parent rabbits?
Black x Grey
Black x White
Grey x Grey
Grey x White
Referring to the fur of rabbits, they can have black (BB), grey (Bb), or white (bb) fur. What would the phenotypes of these offspring be based on their genotypes?
black and grey
grey only
black and white
white and grey
Codominance: petal color in flowers can either be red, white, or roan. What are the possible genotypes?
CRCR, CRCw, and CRCW
CRCW, CRCw, and CRCW
CRCR, CRCw, and CWCW
Codominance: petal color in flowers can either be red, white, or roan. What are the possible phenotypes?
Red and white
Red and roan
White and roan
Red, White and Roan
What is true about the offspring in for parents 1 and 2 in the second generation? (Please note; individuals that are colored in have sickle cell & males are square and females are the circles)
One of their sons has sickle cell anemia
None of their offspring have sickle cell
Their daughter has sickle cell anemia
All of their children have sickle cell anemia
