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