WorksheetsUnit 3 - Reproduction & Heredity
Total questions: 53
Worksheet time: 49mins
Name
Class
Date
1.
Creates the greatest diversity & therefore the ability to survive changing environments
a)
sexual reproduction
b)
asexual reproduction
c)
cloning
d)
fragmentation
2.
2 dogs reproduce, 2 sex cells join together & form offspring. The resulting offspring is likely
a)
to express only recessive traits
b)
to be identical to ONE parent
c)
to share some traits from BOTH of its parents
3.
What is a disadvantage of asexual reproduction?
a)
New species of organisms cannot come into being.
b)
The offspring does not multiply rapidly.
c)
The offspring does not live for long.
d)
All of these
4.
The genetic instructions are found in ---- within the DNA
a)
traits
b)
chromosomes
c)
genes
d)
DNA
5.
Which of the following describes the main advantages of sexual reproduction?
a)
requires lots of time/energy
b)
no new gene combos can arise
c)
diversity
d)
looks identical to the parent
6.
A general name for a sex cell (egg or sperm) is a:
a)
zygote
b)
gene
c)
offspring
d)
gamete
7.
Which reproduction requires a mate?
a)
asexual
b)
sexual
c)
neither
8.
Requires only ONE parent creating a clone of themselves-no diversity, large amounts of offspring
a)
natural selection
b)
selective breeding
c)
sexual reproduction
d)
asexual reproduction
9.
Passes genetic information
onto future generations
onto future generations
a)
sexual reproduction
b)
asexual reproduction
c)
both
10.
Prokaryotes reproduce asexually through -
a)
Spore formation
b)
Vegetative propagation
c)
Binary fission
11.
In general, asexual reproduction is used by _______ organisms.
a)
simple
b)
extinct
c)
complex
12.
All of the offspring of an organism have the same genetic material, which is identical to the parent organism. From this, we can conclude that this organism -
a)
makes its own food
b)
is unicellular
c)
lives in a marine habitat
d)
reproduces asexually
13.
What percentage of chromosomes are handed down by a sperm cell?
a)
75%
b)
25%
c)
50%
d)
100%
14.
Which type of reproduction produces diverse offspring?
a)
Asexual reproduction
b)
Sexual reproduction
c)
Both asexual and sexual reproduction
d)
Asexual offspring
15.
A human zygote, like most other human cells, contains 46 chromosomes. How many chromosomes does a zygote receive from the mother?
a)
0
b)
23
c)
46
d)
92
16.
Passing of traits from one generation to the next
a)
Heredity
b)
Genetics
c)
Inheritance
d)
Allele
17.
Scientific study of how traits are passed to offspring through genes
a)
Heredity
b)
Genetics
c)
Inheritance
d)
Allele
18.
Alternate form of a gene for a single trait; may be dominant or recessive
a)
Heredity
b)
Genetics
c)
Inheritance
d)
Allele
19.
Segment of DNA on a chromosome that contains instructions for protein synthesis and controls a particular inherited trait
a)
Gene
b)
Pedigree
c)
Punnett Square
d)
Dominant
20.
An allele whose trait always shows up in the organism when the allele is present
a)
Gene
b)
Pedigree
c)
Punnett Square
d)
Dominant
21.
A chart that shows all the possible combinations of alleles that can result from a genetic cross
a)
Gene
b)
Pedigree
c)
Punnett Square
d)
Dominant
22.
An organism’s physical appearance, or visible traits
a)
Recessive
b)
Genotype
c)
Phenotype
d)
Heterozygous
23.
Having two different alleles for a given trait, usually one dominant and one recessive
a)
Recessive
b)
Genotype
c)
Phenotype
d)
Heterozygous
24.
An allele that is masked when a dominant allele is present
a)
Recessive
b)
Genotype
c)
Phenotype
d)
Heterozygous
25.
An organism’s genetic makeup, or allele combinations
a)
Recessive
b)
Genotype
c)
Phenotype
d)
Heterozygous
26.
Having two identical alleles for a given trait, either both dominant or both recessive
a)
Homozygous
b)
Selective Breeding
c)
Mutation
d)
Carrier
27.
The man who studied peas and discovered patterns of heredity...
a)
Watson
b)
Crick
c)
Mendel
d)
Darwin
28.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
appearance of an organism
29.
Squidward has light blue skin, and his genotype for this trait is Bb. Would Squidward be considered a purebred or hybrid for light blue skin?
a)
Purebred
b)
Hybrid
30.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
31.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
32.
What is a phenotype?
a)
The genetic make up (code)
b)
The physical trait
33.
The passing of genetic traits from parent to offspring is ...
a)
heredity
b)
trait
c)
gene
d)
allele
34.
Having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
heterozygous
c)
protein
d)
chromosome
35.
Having two different genes for a trait (sometimes called hybrid)
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
36.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
37.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
38.
G = green, g = yellow
The genotype for a yellow plant is...
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
39.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
40.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75% tall and 25% short
c)
100% short
41.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
42.
A red flowered plant (RR) is crossed with a white flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance. What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
43.
What type of inheritance do two alleles have if their traits blend together?
a)
Incomplete Dominance
b)
Codominance
44.
This is an example of ___________?
a)
Incomplete Dominance
b)
Codominance
45.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
46.
If you cross a black chicken with a white chicken, only checkered chickens would be produced. What kind of inheritance pattern does this follow?
a)
Incomplete Dominance
b)
Codominance
47.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
48.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Codominance
49.
If you cross a red snapdragon with a white snapdragon, only pink snapdragons will be produced. What type of inheritance pattern does this follow?
a)
Complete Dominance
b)
Incomplete Dominance
c)
Codominance
d)
Sex-linked
50.
How many alleles does an individual have for each trait?
a)
1
b)
2
c)
3
d)
4
51.
When different traits are crossed and both are expressed in an organism
a)
Codominance
b)
Gene expression
c)
Intermediate Inheritance
d)
Incomplete Dominance
52.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
BB
53.
This shows...
a)
Incomplete dominance
b)
Codominance
c)
Sex linked traits
d)
Dominant inheritance
100 %
