WorksheetsGenetics Unit Review
Total questions: 45
Worksheet time: 50mins
1. How are traits transferred from one generation to another? 7.L.4A.1
Sperm and Egg
Sperm only
Egg only
mitosis
1. In Mendel’s famous experiments with garden peas, purple flowers are dominant over white. What would be the phenotypic ratio of the cross at below? 7.L.4A.3
purple/white, 1:1
purple/white, 1:2:1
purple/white, 3:1
purple/white, 1:3
1. Referring to Mendel’s famous experiments with garden peas, purple flowers are dominant over white flowers. Which of answer choices BEST describes the genotypic ratio of the cross at right? 7.L.4A.3
one homozygous dominant, two heterozygous, and one homozygous recessive
three heterozygous and one homozygous recessive
three homozygous dominant and one homozygous recessive
1. Study the figure to the left. Which of the squares shows the offspring that will NOT have the ability to roll his tongue? 7.L.4A.3
Square 1
Square 2
Square 3
Square 4
The study of how traits are inherited
homozygous
Hybrid
Genetics
Phenotype
The physical expression of a gene e.g. brown eyes
Homozygous
Heterozygous
Genetics
Phenotype
What is the correct genotype to fill in the missing square?
NN
Nn
nn
NnNn
Brown eyes is dominant to blue eyes. Which genotype would give brown eyes?
BB
Bb
bb
BB and Bb
What is the probability that the offspring will have recessive blue eyes?
1/4
2/4
3/4
4/4
Which of the following is a phenotype that would match this punnett square?
BB
brown eyes
bb
1/4
Which of the following represents a genotype that is heterozygous?
RR
Rr
rr
curly hair
Which of the following represents a genotype that is homozygous dominant?
RR
Rr
rr
AB
A person who is Pp has one recessive gene, but does not have the disease. They are called a ...
carrier
recessive
homozygous
infected
Which of the following is an acquired trait?
being able to read
height
eye color
having a genetic disease
The mom cat shown had kittens with an orange male cat. Which best explains how two kittens are gray and one is orange?
the kittens got all of their genetic material from their gray mother
the kittens got all of their genetic material from their orange father
the kittens did not get genetic material from either of the parents
the kittens got half of their genetic material from their gray mother and half of their genetic material from their orange father
What is the best explanation for why the arctic fox shown has white fur?
the snow covers his fur, making it turn white from the water
the fox chose to have white fur because it looks nicer in the arctic environment
the gene for white fur was passed down from the fox's parents through heredity
the sun turned the fox's fur white
For snakes, L represents the gene for long offspring and l represents the gene for short offspring. If long (L) is dominant over short (l), which of the following can be said about genotype Ll?
It produces a long snake
It produces a short snake
It produces a medium snake
It produces a snake with bunny ears
Dark hair is a dominant trait. If you are heterozygous for the trait, it means...
You have 2 dominant genes for dark hair and therefore you have dark hair
You have only recessive genes and have light hair
You have 2 dominant genes for dark hair but do not have dark hair
You have dark hair but also carry the recessive gene for light hair
A Homozygous Dominant brown-eyed dog is crossed with a Heterozygous brown-eyed dog in this Punnett Square. What is the probability that each offspring will be blue-eyed?
100%
50%
25%
0%
:
Based on the pedigree shown above, how is it possible for the daughter to have green eyes while the rest of the family has brown eyes?
Both parents are heterozygous.
Both parents are homozygous.
The mother is heterozygous, and the father is homozygous.
Two parents can have the same phenotype but different genotypes.
Two heterozygous pea plants are crossed. What are the chances they will have a homozygous recessive offspring?
a photograph or picture of chromosomes grouped in ordered pairs is a ______________
pedigree
Punnett Square
Venn Diagram
Karyotype
A normal human zygote should have _____ chromosomes inside.
46
23
92
64
What is the mutation in this persons chromosomes?
There is only one X
7 is shaped like a hockey stick
There's an extra 21
1 is too curved
This disorder is called "Cry of the cat", can you find the chromosomal mutation?
There are too many chromosomes
They are missing the Y chromosome
Chromosome 1 is bent
Chromosome 5 is too short (missing a piece)
This person has Angel Mans syndrome. What is different about their chromosomes?
Chromosome 1 is misshapen
Chromosomes 21 is too small
They are missing one of chromosome 15
Chromosomes 7 and 8 look weird
Which of the following statements about chromosomes is correct?
Chromosomes are long, thread-like structures
Chromosomes are found in the nucleus of all cells in the human body
Chromosomes contain DNA
All of the above
What are genes?
Pants
Specific traits
Sections of DNA arranged along the chromosomes
Chromosomes
What is a short segment of a DNA strand that codes for our characteristics?
chromosome
DNA
RNA
gene
Where is DNA found in a human cell?
ribosome
nucleus
cell membrane
cytoplasm
From smallest to largest how would genetic information be organized?
genes, cell, nucleus, chromosome, DNA
chromosome, cell, gene, DNA, nucleus
DNA/nucleotides, gene, chromosome, nucleus, cell
nucleus, cell, gene, DNA, chromosome
chromosomes and are called ________.
