WorksheetsGenetics Vocab
Total questions: 25
Worksheet time: 22mins
Name
Class
Date
1.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
2.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
3.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
4.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
5.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
6.
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
7.
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
8.
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
9.
W=white hair
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
w= non-white hair
If you cross a horse with WW and a horse with ww what fraction of the offspring would be expected to have white hair?
a)
none
b)
3/4
c)
1/2
d)
all
10.
trait shows only if both parents pass it on
a)
recessive
b)
dominant
c)
codominan
11.
when you have two different genes
a)
heterozygous
b)
dominant
c)
homozygous
12.
when you have two of the same genes
a)
heterozygous
b)
recessive
c)
homozygous
13.
the physical look of a trait
a)
phenotype
b)
genotype
c)
recessive
14.
the following letters are an example of _______ dd
a)
recessive
b)
homozygous recessive
c)
homozygous dominant
d)
dominant
15.
Dd letters are an example of....
a)
heterozygous genes
b)
homozygous genes
c)
dominant genes
d)
recessive genes
16.
DD is an example of
a)
homozygous recessive
b)
dominant
c)
Homozygous dominant
d)
recessive
17.
Where, in the eukaryotic cell, is DNA located?
a)
ribosomes
b)
nucleus
c)
E.R.
d)
cytoplasm
18.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
19.
Which of the following is homozygous dominant?
a)
Yy
b)
Y
c)
yy
d)
YY
20.
B=brown eyes
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
b= blue eyes
What is true about two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
21.
R=round seed
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?
r=wrinkled seed.
Cross a homozygous round with a wrinkled. Which statement predicts the results?
a)
offspring will be Rr
b)
offspring will be RR
c)
round seeds will be recessive to wrinkled
d)
Wrinkled will be observed in half of offspring
22.
the genotype "aa" would result in a
a)
recessive trait
b)
dominant trait
23.
characteristics, such as facial features, eye color, hair color, skin color, or height
a)
traits
b)
genes
c)
codes
d)
offspring
24.
section of the DNA molecule that controls and determines the traits of an organism
a)
chromosome
b)
nucleus
c)
code
d)
gene
25.
an organism’s genetic makeup or allele combinations (Tt, TT, tt)
a)
genotype
b)
phenotype
c)
polygenic inheritance
d)
purebred
100 %
