WorksheetsBiology Heredity
Total questions: 25
Worksheet time: 25mins
What is heredity?
the study of pea plants
the passing down of traits from parent to offspring
the study of genetics
the passing of traits from offspring to parents
What is an allele?
a pair of chromosomes
the study of heredity
a dominant trait
different forms of a gene
What word describes someone who has two DIFFERENT alleles for a certain trait
homozygous
purebred
heterozygous
What word is used to describe your PHYSICAL characteristics that are determined by your genes?
Genotype
Chromosomes
Allele
Phenotype
The same gene can come in different versions, the different versions of a gene are called
(a)
Alleles
Chromosomes
Traits
Complete the following monohybrid punnett by labeling the each box with the correct genotype.
TT
Tt
Tt
tt
Changes in a DNA sequence is called a (a)
mutation
translation
transcription
The following genotypes are (a) : Tt, Mm and Gg
heterozygous
homozygous
The following physical descriptions are (a) hair color, eye color, height.
phenotypes
genotypes
Label the diagram
Chromatin
DNA
Chromosome
If I have two of the same alleles for a gene (i.e. rr), what word would describe my genotype?
heterozygous
homozygous
hybrid
dominant
On what structures do we find genes?
genes
alleles
chromosomes
traits
What is genetics?
the study of heredity
the study of pea plants
the study of cells
the study of bacteria
What type of gene is ALWAYS expressed if it is present?
recessive
dominant
allele
hybrid
What is another word for homozygous?
heterozygous
purebred
hybrid
dominant
What is a recessive gene?
One whose trait ALWAYS shows up
One whose trait is hidden if a dominant gene is present
One whose trait NEVER shows up
What is a gene?
the smallest unit of life
what you look like
denim pants
DNA that codes for a trait
What is a genotype?
the genes you have
your physical characteristics
If I am heterozygous for dark hair, what would my genotype be?
HH
hh
Hh
Hb
hereditary material with the instructions to make an organism
DNA
dominant trat
phenotype
heterozygous
The basic unit of heredity passed from parent to child; Part of DNA
trait
gene
DNA
dominant
Which of the following best describes the concept of heredity in biology?
The study of ecosystems and their interactions
The passing of genetic traits from parents to offspring
The process of photosynthesis in plants
The classification of living organisms
In a genetic experiment, a pea plant with a genotype of Tt is crossed with another plant with a genotype of tt. What is the probability of obtaining a plant with the genotype tt?
0%
25%
50%
75%
Which of the following is an example of a phenotype?
The sequence of nucleotides in a DNA molecule
The presence of a recessive allele
The color of a flower
The genotype of an organism
What is the role of a Punnett square in genetics?
To determine the physical characteristics of an organism
To predict the probability of certain traits in offspring
To identify the sequence of DNA bases
To classify organisms into different species
