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When mendel crossed true breeding tall plants with true breeding short plants all the offspring were tall because?
Tallness is a dominant trait and shortness is a recessive trait according to Mendel's principles of inheritance. When true breeding tall plants (homozygous dominant) are crossed with true breeding short plants (homozygous recessive), all offspring inherit one dominant tall allele, resulting in them being tall.
What is a genetic factor that is blocked by the presence of a dominant factor?
A genetic factor that is blocked by the presence of a dominant factor is known as a recessive allele. In a heterozygous genotype, where one allele is dominant and the other is recessive, the dominant allele's traits will be expressed while the recessive allele's traits are masked. For example, in pea plants, the allele for tall stems (dominant) will override the allele for short stems (recessive), resulting in all offspring displaying the tall phenotype.
In pea plants tall (T) plants are dominant over short (t) plants. If a heterozygous (Tt) pea plant is crossed with a homozygous dominant (TT) pea plant all of the resulting pea plants should be tall (?
Dominant Allele
When gregor mendel crossed true bleeding tall plants with true bleeding short plants plants all the offspring were tall because?
When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because the tall trait is dominant over the short trait. In this cross, the tall plants contributed a dominant allele, while the short plants contributed a recessive allele. Since the presence of just one dominant allele is sufficient to express the tall phenotype, all the F1 offspring exhibited the tall trait. This foundational experiment established key principles of inheritance.
How would a baby change if one parent was homozygous dominant for all the traits and the other parent was heterozygous?
If one parent is homozygous dominant for all traits (carrying two dominant alleles for each trait), and the other parent is heterozygous (carrying one dominant and one recessive allele for each trait), there would be a 100% chance that the baby would inherit the dominant alleles from the homozygous dominant parent. Therefore, the baby would also be heterozygous for all the traits, carrying one dominant and one recessive allele for each trait.
Father with homozygous genes for dominant trait?
This means that the father has two copies of the dominant allele for a particular trait. As a result, all of his offspring will inherit at least one copy of the dominant allele from him. This implies that all his offspring will either express the dominant trait or be carriers of the dominant allele.
When mendel crossed true breeding tall plants with true breeding short plants all the offspring were tall because?
Tallness is a dominant trait and shortness is a recessive trait according to Mendel's principles of inheritance. When true breeding tall plants (homozygous dominant) are crossed with true breeding short plants (homozygous recessive), all offspring inherit one dominant tall allele, resulting in them being tall.
What fraction of the progeny of the cross BbTt x BBtt will have black fur and long tails?
50% of the progeny will have black fur and long tails. This is because all of the offspring will inherit at least one dominant B allele for black fur, and 50% will inherit a dominant T allele for long tails.
What is a genetic factor that is blocked by the presence of a dominant factor?
A genetic factor that is blocked by the presence of a dominant factor is known as a recessive allele. In a heterozygous genotype, where one allele is dominant and the other is recessive, the dominant allele's traits will be expressed while the recessive allele's traits are masked. For example, in pea plants, the allele for tall stems (dominant) will override the allele for short stems (recessive), resulting in all offspring displaying the tall phenotype.
In pea plants tall (T) plants are dominant over short (t) plants. If a heterozygous (Tt) pea plant is crossed with a homozygous dominant (TT) pea plant all of the resulting pea plants should be tall (?
Dominant Allele
What type of allele is in the all of the egg nuclei?
the dominant allele is in all egg nuclei.
What is dominant and recessive allele?
A dominant allele is an allele where its phenotype will always be represented when the allele for that gene is present. A recessive allele can be masked by a dominant allele when a dominant and recessive allele are present for the same gene. A recessive allele will only present itself when two recessive alleles for a trait are present.
When gregor mendel crossed true bleeding tall plants with true bleeding short plants plants all the offspring were tall because?
When Gregor Mendel crossed true-breeding tall plants with true-breeding short plants, all the offspring were tall because the tall trait is dominant over the short trait. In this cross, the tall plants contributed a dominant allele, while the short plants contributed a recessive allele. Since the presence of just one dominant allele is sufficient to express the tall phenotype, all the F1 offspring exhibited the tall trait. This foundational experiment established key principles of inheritance.
What is the genotype of a child if the mother is homozygous for the dominant trait and the father is homozygous for the recessive trait?
The dominant parent is most likely homozygous dominant, and the recessive parent has only the homozygous genotype. So the dominant parent can pass on only dominant alleles for this trait, and the recessive parent can pass on only recessive alleles for this trait. So all of the offspring would be heterozygous and have the dominant phenotype.
How would a baby change if one parent was homozygous dominant for all the traits and the other parent was heterozygous?
If one parent is homozygous dominant for all traits (carrying two dominant alleles for each trait), and the other parent is heterozygous (carrying one dominant and one recessive allele for each trait), there would be a 100% chance that the baby would inherit the dominant alleles from the homozygous dominant parent. Therefore, the baby would also be heterozygous for all the traits, carrying one dominant and one recessive allele for each trait.
What is the genotype and phenotype ratios for a homozygous dominant female and a homozygous resessive male?
When a homozygous dominant female (genotype AA) is crossed with a homozygous recessive male (genotype aa), all offspring will inherit one dominant allele from the mother and one recessive allele from the father, resulting in a genotype of Aa for all offspring. The phenotype ratio will show all offspring displaying the dominant trait. Thus, the genotype ratio is 100% Aa, and the phenotype ratio is 100% expressing the dominant trait.
When does a dominant allele control a charteristic?
at all times
