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Heredity Review 2
Test Description: A review of heredity concepts from Mr. Byrd's 8th grade class
Instructions: Answer all questions to get your test result.
1) An organism's ingerited alleles together form its
A
dominant traits
B
genotype
C
phenotype
D
pedigree
2) In the second generation these reappear after disappearing in the first generation
A
dominant traits
B
genotypes
C
alleles
D
recessive traits
3) Which of these is an advantage of sexual reproduction?
A
It allows for genetic variation
B
Organisms don't need other organisms to reproduce
C
It does not allow for genetic variation
D
It allows for true-breeding
4) Offspring that are different from both parents are produced by
A
something going wrong
B
sexual reproduction
C
mitosis
D
asexual reproduction
5) Two forms of a gene, one from each parent, are called
A
albinism
B
meiosis
C
alleles
D
genes
6) This kind of plant produces offspring with the same traits as the parent.
A
self-pollinating
B
selective breeding
C
ture-breeding
D
cross-pollinating
7) Incomplete dominance happens because
A
no one really cared
B
the alleles have no influence
C
each allele has its ond degree of influence
D
there are no alleles present
8) Males are more likely to have sex-linked disorders because they have
A
two Y chromosomes
B
only one X chromosome
C
one X and two Y chromosomes
D
two X chromosomes
9) What are the chromosomes that carry the same set of genes?
A
homologous chromosomes
B
asexual chromosomes
C
twin chromosomes
D
ordinary chromosomes
10) How are sex cells different from other human cells?
A
Sex cells are larger
B
Sex cells have twice as many chromosomes
C
Sex cells have no chromosomes
D
Sex cells have half as many chromosomes
*select an answer for all questions
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