science
Grade-12
Easy
Question
How many generations are shown in this pedigree?
![](data:image/png;base64,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)
1- 2
- 3
- 4
Hint:
4 generation
The correct answer is: 4
- 4 generations are shown in this pedigree.
- Vertical line from a single horizontal represents a generation.
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How would you write a homozygous dominant genotype?
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Which of the following genotypes is dominant?
Which of the following genotypes is dominant?
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Incomplete dominance means that there traits are
Incomplete dominance means that there traits are
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On a pedigree, this symbol represents a ----
![](data:image/png;base64,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)
On a pedigree, this symbol represents a ----
![](data:image/png;base64,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)
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On a pedigree, this symbol represents a --
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACoAAAAgCAYAAABkWOo9AAAAuUlEQVRYCe2XQQrEIAxFc09P4oU8glsvIHgMQXDjBTIEupksHEtq05lJ4C/EWh9PpRXGGKgdXCjQhqT5V+oRoCklrLVOed9AQwjovd8evoqnQZ1zCADbY6BXWzajZvT42Nipl24FO0xSg3y8GeVGpG0zKjXIx5tRbkTa/h+jOWeMMW6P2Ch/wV3t0z8ld4HxeX4LtLWGtDc1s2SU7tP0oHY+3ut771hKUQ9xzApmnU/qM9CrV+NrjL4AZBYMECfP2BMAAAAASUVORK5CYII=)
On a pedigree, this symbol represents a --
![](data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACoAAAAgCAYAAABkWOo9AAAAuUlEQVRYCe2XQQrEIAxFc09P4oU8glsvIHgMQXDjBTIEupksHEtq05lJ4C/EWh9PpRXGGKgdXCjQhqT5V+oRoCklrLVOed9AQwjovd8evoqnQZ1zCADbY6BXWzajZvT42Nipl24FO0xSg3y8GeVGpG0zKjXIx5tRbkTa/h+jOWeMMW6P2Ch/wV3t0z8ld4HxeX4LtLWGtDc1s2SU7tP0oHY+3ut771hKUQ9xzApmnU/qM9CrV+NrjL4AZBYMECfP2BMAAAAASUVORK5CYII=)
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Aa, DD, Bb, yy are all examples of _______.
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Dominant alleles are represented by a_____.
Dominant alleles are represented by a_____.
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The variety of skin color in humans comes about partly because more than 4 different genes control this trait. This is an example of _______.
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Genes code for________.
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