WorksheetsLife Science, Unit A, Ch 4, Heredity, Post Assessment
Total questions: 25
Worksheet time: 1hrs 15mins
Name
Class
Date
1.
If the dominant allele (B) represents brown hair and the recessive allele (b) represents blonde hair, which offspring represents a homozygous recessive genotype?
a)
BB
b)
Bb
c)
blonde
d)
bb
2.
The scientific study of heredity is ____.
a)
Genetics
b)
Punnett squares
c)
Inheritance
d)
Biology
3.
The dominant trait as seen in this Punnett square is
a)
yellow pea seeds
b)
green pea seeds
c)
there is no dominant seed
d)
Jolly green giant
4.
How many chromosomes are in sex cells of humans?
a)
12
b)
46
c)
23
d)
18
5.
One ___________ is usually dominant, while the other is recessive.
a)
gene
b)
clone
c)
disorder
d)
allele
6.
How many chromosomes are there in most of your body's cells?
a)
23
b)
46
c)
12
d)
48
7.
How many chromosomes are there in most of your body's cells?
a)
23
b)
46
c)
12
d)
48
8.
Instructions for an inherited trait are called
a)
alleles
b)
albinism
c)
phenotype
d)
genes
9.
What is heredity?
a)
traits passing from offspring to parents
b)
plants that are cross-pollinated
c)
traits passing from parents to offspring
d)
the ratio of dominant to recessive traits
10.
What is a phenotype?
a)
the way an organism feels
b)
a dominant gene
c)
a group of 5 alleles
d)
the way an organism looks
11.
When writing allele pairs, the dominant allele is written as a
a)
capital letter
b)
lower case letter
c)
a number
12.
How much of your DNA do you inherit from your mom?
a)
10%
b)
25%
c)
50%
d)
it varies
13.
What is the diploid number in human cells?
a)
2
b)
23
c)
46
d)
92
14.
Which of the following is a phenotype?
a)
Aa
b)
red hair
c)
heterozygous
d)
DNA
15.
What is the definition of Heterozygous?
a)
when an individual has two sets of the same allele
b)
when it is neither dominant or recessive
c)
A pair of genes where one is dominant and one is recessive.
16.
A nineteenth century Austrian monk, experimented with pea plants which showed how traits are passed from parent to their offspring
a)
Mendel
b)
mitosis
c)
Gene
d)
chromosome
17.
A threadlike structure in the nucleus made of DNA
a)
chromosome
b)
gene
c)
life cycle
d)
mitosis
18.
The part of a chromosome that contains the DNA code for an inherited trait
a)
instinctive behaviors
b)
learned behaviors
c)
gene
d)
life cycle
19.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
20.
What characteristic would a child not inherit from parents?
a)
freckles
b)
eye color
c)
hair style
d)
dimples
21.
The possible variations of alleles (in chromosomes) for a particular trait within an individual.
a)
Inheritance
b)
Genotype
c)
Phenotype
d)
Genetics
22.
How much of your DNA do you inherit from your dad?
a)
10%
b)
25%
c)
50%
d)
it varies
23.
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
24.
T = tall and t = short
TT and Tt would result in the following phenotype
TT and Tt would result in the following phenotype
a)
short
b)
tall
c)
both tall and short
d)
neither tall or short
25.
The genetic transmission (passing on) of characteristics from parents to offspring.
a)
Inheritance
b)
Genotype
c)
Phenotype
d)
Genetics
100 %
