What is an example that represents a homozygous recessive genotype?
rr
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20
A man is heterozygous for cystic fibrosis which is a recessive trait. A woman is homozygous dominant. What are the chances their children will have cystic fibrosis?
0%
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15
Genetics is the study of ____?
heredity
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25
What type of complex pattern of inheritance would it be where more than 2 alleles control the trait?
multiple alleles
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5
Did Mendel test and record pea plants for length of the leaf?
no
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25
What would be an example of codominance?
both traits appear on offspring like white + red= white and red
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25
What type of complex patterns of inheritance would it be if multiple genes determine the phenotype of a trait?
polygenic inheritance
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25
What would be an example of multiple alleles controlling a trait?
blood type
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25
If you are looking at 4 tall pea plants, what is the possible genotype?
TT, or Tt
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25
What type of complex pattern of inheritance would it be if both alleles show up in the offspring?
codominance
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15
What is self-pollination?
when pollen falls on the same plant
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20
If genotypes of offspring are Oo, Oo, oo, oo, what's the ratio if orange is dominant to purple?
2/4 or 50%
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10
Recessive traits are observed when how many recessive factors are present?