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