Heredity: Question Preview (ID: 5858)

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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 dominance of one trait over another.
d) The passing of traits from parents to offspring.

Which is true of a recessive trait?
a) It expresses itself in the offspring when present in a pair of alleles.
b) It is never expressed in the offspring from any combination of allele pairs.
c) It expresses itself in the offspring only when paired with another recessive allele.
d) It always expresses itself in the offspring.

What is the term for the way an orgamism looks and behaves?
a) genotype
b) phenotype
c) allele type
d) heredity

Which of the following allele pairs is heterozygous?
a) tt
b) TT
c) Tt
d) pp

Which of the following allele pairs is homozygous for a dominant trait?
a) TT
b) tt
c) Tt
d) tT

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) 0%
b) 25%
c) 50%
d) 100%

What contols traits in organisms?
a) Punnett squares
b) genes
c) DNA
d) chromatids

What do we call the manipulating the arrangement of DNA that makes up a gene?
a) chromosomal migration
b) viral reproduction
c) cross breeding
d) genetic engineering

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) 25%
c) 50%
d) 100%

The allele pair, Dd, is an expression of what?
a) genotype
b) phenotype

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