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WorksheetsGenetics
Total questions: 29
Worksheet time: 15mins
Different choices of the same gene are called
alleles
sex cells
nitrogen bases
amino acids
Which of the following are examples of phenotypes of an organism?
Gg, green pod
Bb, TT
red hair, blue eyes
Purple, Pp
Which of the following statements are true?
Human body cells have 23 chromosomes.
Human body cells have 46 chromosomes.
All living things have the same number of chromosomes.
All mammals have the same number of chromosomes.
This is a karyotype. What does it show?
Genetic Diseases
Chromosomes
Genotypes
Phenotypes
What does heterozygous mean?
2 different alleles for the same trait
2 same alleles for the same trait
a mutation for the same trait
a different choice from the parent
Chromosomes are composed of
Bases
Phosphates
Deoxyribose sugar
DNA
In a genotype, what does the captial letter represent?
The recessive trait
The dominant trait
The incomplete dominant trait
The blended trait
If free ear lobes (L) are dominant over attached ear lobes (l) what is the phenotype
attached ear lobes
one ear lobe attached, on ear lobe free
LL
Free ear lobes
Which sex chromosome combination is for a female
XX
XY
YX
YY
Of the traits listed, which are inherited?
Hair color, eye colo
liking classical music, riding a skateboard
pierced ears, speaking a language
having freckles, doing handstands
In pea plants, tall is dominant. If 2 heterozygous plants cross, the offspring will be?
will all be tall
will be 75% tall, 25% short
will be 50% tall, 50% short
will be all short
If all the offspring were bb, what was the genotype of each parent?
BB and bb
Bb and Bb
bb and bb
i honestly dont know
What would NOT represent an inherited trait for an orange tree?
The size of its leaves
The type of fruit it produces
Where it grows
The height of the tree
The small segments of chromosomes that code for a particular trait are called?
genes
proteins
nucleotides
jeans
How many chromosomes are normally found in a human sex cell?
46
23
48
24
Black fur(B)is dominant over white fur(b). If a hybrid black cat mated with a hybrid white cat
25% would have BB, 75% bb
25% BB, 25% bb, 25 % Bb, 25%bB
50 % Bb and 50% would have bb.
25% BB, 50% Bb, 25% bb
Which of the following are examples of genotypes?
Rr, TT
Tt, green
ll, Free
Tall, Red
White (W) is dominant over purple (w). Of the offspring, how many squares represent the white?
4
3
2
1
The physical characteristics or appearance of an organism is referred to as its
genotype
allele pattern
phenotype
allotype
Brown (B) fur is dominant over white fur (b). Homozygous brown crosses with homozygous white...
25 % heterozygous
50% heterozygous
75% heterozygous
100 % heterozygous
Mrs. Babcock was told that her unborn baby had XX chromosomes. What does this tell you?
the baby will be a girl
the baby will be a boy
the baby will be a twin
The baby might be a boy or a girl. It depends
Who is often referred to as the "Father of Genetics"?
Gregor Mendel
Watson & Crick
Erwin Chargaff
Charles Darwin
A hippo has 18 chromosomes in its gametes. How many chromosomes does it have in its body cells?
36
40
18
1
none
Meiosis produces
2 body cells with same number of chromosomes as parent cell.
4 cells with half the chromosomes as the parent cell.
4 cells with the same number of chromosomes as parent cell.
2 body cells with half the chromomses as the parent cell.
What is incomplete dominance?
Both alleles are dominant.
Both alleles are recessive.
Both alleles are expressed and "blend".
Neither allele is seen.
What does meiosis produce?
Sex cells
Body cells
Plant cells
Bread cells
What is the purpose of fertilization?
To split the number of chromosomes in half.
To regain a full set of chromosomes
To make 2 identical cells into 1 identical cell
Idk
What would the complimentary nitrogen bases for this gene sequence? ATGCGC
ATGCGC
TACGCG
AACGCA
TACGCA
X-linked genetic disorders like color blindness are more common in males than females.
TRUE
FALSE
Nobody knows
.....
