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Heredity
Test Description: Genetics, traits, dominance
Instructions: Answer all questions to get your test result.
1) How is heredity defined?
A
The use of Punnett squares to predict offspring.
B
The passing of traits from parents to offspring.
C
The study of how traits are inherited through the interaction of alleles.
D
The dominance of one trait over another.
2) Which is true of a recessive trait?
A
It always expresses itself in the offspring.
B
It expresses itself in the offspring only when paired with another recessive allele.
C
It expresses itself in the offspring when present in a pair of alleles.
D
It is never expressed in the offspring from any combination of allele pairs.
3) What is the term for the way an orgamism looks and behaves?
A
phenotype
B
heredity
C
genotype
D
allele type
4) Which of the following allele pairs is heterozygous?
A
Tt
B
TT
C
pp
D
tt
5) Which of the following allele pairs is homozygous for a dominant trait?
A
tT
B
TT
C
Tt
D
tt
6) What si the probability that offspring will be tall if a plant with the gene pair, TT, is crossed with another plant that is heterozygous for tall?
A
100%
B
25%
C
0%
D
50%
7) What contols traits in organisms?
A
chromatids
B
DNA
C
genes
D
Punnett squares
8) What do we call the manipulating the arrangement of DNA that makes up a gene?
A
viral reproduction
B
cross breeding
C
chromosomal migration
D
genetic engineering
9) When plants are crossed that have the alleles pairs, Tt and tt, what is the probability that the offspring will be short?
A
0%
B
100%
C
25%
D
50%
10) The allele pair, Dd, is an expression of what?
A
genotype
B
phenotype
*select an answer for all questions
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