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Mendel’s pea plants had either purple or white flowers. This means that the plants
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
What does codominance mean in genetics?
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
two birds are crossed; one that is homozygous for red feathers and one that is homozygous for blue feathers. Purple offspring result due to incomplete dominance. Then, two of the purple offspring are crossed. how many of the offspring will be purple?
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
Parents with the genotypes AO and AB have a child. What are all the possible blood types of the child?
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
What is a mutation?
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
In roses, red flowers and long stems are dominant. A rose that is homozygous for both red flowers and long stems is crossed with one that is heterozygous for red flowers and homozygous for short stems. How many offspring will have red, long stems?
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
The different forms of a gene are called
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
What happens during meiosis?
have two alleles for the gene.
Both alleles are dominant.
alleles
A, B
100 percent
2 in 4
any change in a gene or chromosome
Chromosome pairs separate to form new sex cells.
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