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WorksheetsGenetics Quiz #1
Total questions: 14
Worksheet time: 46mins
Alleles are best described as...
a "stronger" version of a trait
a matched set of chromosomes
genetic information, ex. Rr
different versions of a gene
characteristics of features of an organism
Chromosomes come in _________ pairs meaning there are matching genes, one from mom, and one from dad.
dominant
recessive
heterozygous
homologous
hybrid
A dominant allele .....
is always more common in a population
always determines the phenotype of an organism
never determines the phenotype of an organism
determines half of the phenotype of an organism
genotype
the physical expression of genes in an organism
the combination of genes in an organism
characteristic of an organism
number and visual appearance of chromosomes in an organism
another term for a heterozygous genotype is ....
purebreed
hybrid
recessive
dominant
This term refers to an allele that is masked when a dominant allele is present
hybrid
purebreed
homologous
recessive
The number and visual appearance of chromosomes in the nucleus of an organism
genotype
karyotype
phenotype
oligotype
Genetics is the study of heredity and how _________ are passed down from generation to generation
behaviors
haircuts
traits
muscle size
In humans, the allele for six fingers on one hand is dominant to the allele for five fingers. One parent is heterozygous for this trait and the other parent has five fingers. What is the probability of having a child with 6 fingers?
In lookeet parakeets, green feathers are dominant to blue. When a green parakeet is crossed with a blue parakeet, about half of the offspring have blue feathers. What are the genotypes of the parents?
What can you say about the punnett squared pictured?
It is guaranteed that 75% of the offspring from these 2 parent flowers will be purple
There will always be 1 white flower for every 3 purple flowers
The probability of an offspring with white flower is 25%
It is impossible that about half of the offspring will be white
Consider the following traits in pea plants:
T = tall plants t = short plants
R = round seeds r = wrinkled seeds
G = green seeds g = yellow seeds
An individual has this genotype: tt Rr Gg
Identify the phenotype.
tall, wrinkled, yellow
tall, round, green
short, wrinkled, yellow
short, round, yellow
short, round, green
Consider the following traits in pea plants:
T = tall plants t = short plants
R = round seeds r = wrinkled seeds
G = green seeds g = yellow seeds
An individual has this genotype: TT rr Gg
Identify two other genotypes that would produce the same phenotype
Identify the phenotype
a) What is the genotype of an axanthic python?
b) What is the genotype of a heterozygous cinnamon python?
c) Determine the genotype and phenotype ratio when 2 heterozygous cinnamon pythons are crossed.
