8th Grade Science Test Review

25 Questions  I  By Monicada
Please take the quiz to rate it.

 8th Grade Science Test Review
This is a practice test designed to help you with your test on Tuesday.

  
Changes are done, please start the quiz.


Questions and Answers

Removing question excerpt is a premium feature

Upgrade and get a lot more done!
1.  Identify the following: rr
A.
B.
C.
D.
2.  Used to organize all the possible genotype combinations of offspring from particular parents.
A.
B.
C.
3.  Erwin Chargaff's base pairing rule state that ___________ has an equal proportion to ___________, and ____________ to _____________.
A.
B.
C.
4.  The different forms of a gene.
A.
B.
C.
D.
5.  DNA is made of subunits called
6.  A trait or allele expressed only when two recessive alleles for the same characteristic are inherited.
7.  The genetic material that determines inherited characteristics.
A.
B.
C.
D.
8.  The outer boundary of the cell designed to regulate what comes and out of the cell.
A.
B.
C.
9. 
GG = gray hair Gg = gray hair gg = white hair BB = black eyes Bb = black eyes bb = red eyes
 A male rabbit with the genotype GGbb is crossed with a female rabbit with the genotype ggBb Question: How many out of 16 have white fur and black eyes? ________
10.  A homozygous round seeded plant is crossed with a homozygous wrinkled seeded plant. What are the genotypes of the parents? R= Round r=wrinkled
11.  The passing of traits from parents to offspring.
A.
B.
C.
D.
12.  A nucleotide is composed of
A.
B.
C.
D.
13.  An organelle enclosed in a membrane that contains DNA.
A.
B.
C.
D.
14.  The combination of inherited alleles together form an organism’s .
15.  Identify the  following: Dd
A.
B.
C.
D.
16.  A feature that has different forms in a population.
17.  Different forms of a characteristic.
18.  In rabbits, grey hair is dominant to white hair.  Also in rabbits, black eyes are dominant to red eyes. These letters represent the genotypes of the rabbits:
GG = gray hair Gg = gray hair gg = white hair BB = black eyes Bb = black eyes bb = red eyes
 A male rabbit with the genotype GGbb is crossed with a female rabbit with the genotype ggBb The square is set up below. Fill it out and determine the phenotypes and proportions in the offspring.
Question: How many out of 16 have grey fur and black eyes? ________
19.  An organism’s appearance is known as its
20.  A cross of two traits.
A.
B.
C.
21.  Scientist which contributed to the discovery of the DNA structure were: James Watson, Francis Crick, and Rosalind Franklin.
A.
B.
22.  This is an image of a _________________.
A.
B.
C.
D.
23.  A genetic disorder caused from an added chromosome to chromosome 21.
A.
B.
C.
24. 
Rr x rr R= Round r= wrinkled What percentage of the offspring will be round? ___________
A.
B.
C.
D.
25.  The instructions for an inherited trait.
A.
B.
C.
D.
Back to top

Removing ad is a premium feature

Upgrade and get a lot more done!
Take Another Quiz
We have sent an email with your new password.