What Percentage Of The Offspring Will Be Expected To Have The TTYy Allele Combination?
What percentage of the offspring will be homozygous if a homozygous round seeded plant is crossed with a homozygous wrinkle seeded plant?
0% of the offspring will be homozygous because one parent only has the dominant allele and the other parent only has the recessive allele so all of their offspring will be heterozygous.
25% if they are homozygous with respect to only one allele.
What is the percentage of offspring that will exhibit the dominant trait from A crossing of A homozygous dominant and homozygous recessive individual?
The homozygous dominant individual can only pass on the dominant allele and the homozygous recessive individual can only pass on the recessive allele, therefore all offspring will be heterozygous and have the dominant phenotype.
A dominant allele is a allele that has a trait that is more likely to be passed on to any offspring over the trait expressed in a recessive allele.
A dominant allele is an allele that can take over a recessive allele, so if you have a dominant allele and a recessive allele, then the offspring will most likely have a dominant allele over a recessive allele. The dominant allele is expressed over the recessive allele.
No, a recessive trait will only show in the offspring if there is no dominant allele masking it. The trait that will always show in the offspring is the dominant allele, provided one parent was homozygous for it.
If the parents were AA and AA for example then the phenotype ratio will be 1 A (the dominant allele). The genotype will be 1Aa.
4 live offspring
Yes. Each plant received an allele for tall height and an allele for short height. Because the allele for tall height is dominant, all of the offspring were tall.
Nothing really happens, it just isn't expressed.
Lethal alleles can be the result of a mutation. If the mutated lethal allele is recessive, then the lethal trait it codes for will only emerge if the allele is paired with another copy of itself. Imagine a population that, through some fluke accident, has a disproportionately large number of organisms carrying such a lethal allele. The odds for any mating between individuals resulting in offspring carrying two copies of the allele are high. Many… Read More
T=dominant because in the F1 generation, their offspring are all tall. (:
-Each Parent Only Contributes One Allele Because It Only Need Half Of Each Allele To Make The Offspring. If The Same Person Gave All Of There Alleles It Would Be The Exact Same.
What comes before a recessive allele when determining the genotype of a offspring in a punnett square?
dominant allele before a recessive trait
In sweet pea plant R is the allele for red flowers and r is the allele for white flowers a. If an RR plant and an rr plant are crossed what will be the outcome of their offsprings?
All of the offspring will be red, since each of the four offspring receive the dominant red allele (R). Therefore, the offspring will all have the genotype Rr and a phenotype of red.
An offspring can inherit a recessive trait if both of its parents are homozygous for the dominant allele.
What type of allele is expressed only if two identical copies exist on the homo logs of the offspring?
A dominant allele or a recessive allele. If both parent alleles code for a dominant trait, the offspring will be homozygous dominant for that trait, and will exhibit the dominant phenotype; and if both parent alleles code for a recessive trait, the offspring will be homozygous recessive and exhibit the recessive phenotype.
They are traits that are passed from parent to offspring, and therefore develop into phenotype.
dominant trait or allele
R represents the dominant round allele, and r represents the recessive wrinkled allele. :D
Gene flow and the original allele frequency determine the allele frequency of the subsequent offspring
The dominant allele will always show over the recessive, and both can be passed onto the offspring. To find out exactly which genotypes the children can have you need to make a punnet square!
in a genetic cross, the ALLELE that each parent passes to its offspring is based on PROBABILITY.
An allele is a form of a gene. you get 2 alleles for a trait, one from each parent. A dominant allele is is the allele that is shown in a person's phenotype. A recessive allele is not visible, but is in a person's genotype. Both dominant and recessive alleles can be passed to the individual's offspring.
What is the genotype of a black guinea pig if it is crossed with a whites guinea pig and they have 4 offspring that are black and 2 offspring are white?
Assuming black allele exhibits complete dominance and the white allele is recessive, the genotype is Bb.
Why is it impossible for offspring to show the recessive trait if one parent is homoygous for the dominant trait?
Because the parent with the homozygous alleles for the dominant trait can only pass on that dominant allele to its offspring and the dominant allele, if present, is always expressed.
Let's see what combinations can be formed. HH, HH, Hh, Hh. So, yes their offspring can contain the recessive allele. (THe offspring can be a carrier of the recessive allele.) However, since it is impossible for the offspring to be homozygous recessive, the recessive trait/gene will not show in the offspring's phenotype. Hope that helps!
An offspring receives one blood group allele from each parent. The two alleles inherited by the offspring determines its blood group.
New alleles are the result of mutation. When that allele appears in the population, it is at a very low frequency, and can be lost very easily. For example, consider an allele arising in an individual. Half of his gametes will contain the allele. Therefore, his offspring (assuming, of course, he finds a mate and has any offspring at all) only have a 50% chance of carrying the allele. If he from a species with… Read More
Yes, If both parents are carry one brown allele and one blue allele, they will both have brown eyes but there is a 1 out of 4 chance that the offspring will have blue eyes.
A lethal allele is maintained in population for example when you use bug spray on cockroaches there will be at least one cockroach with an allele that protects it from the bug spray, it then breeds and the allele Is passed to it's offspring and they will also be immune to the pesticide. Those babies will most likely breed with each other when they are mature passing on the allele from both of the parents… Read More
A dominant allele expresses itself in every offspring in every generation. A dominant allele expresses itself irrespective of the other allele present along with it. A recessive allele, however is masked by the presence of dominant allele. It can express itself only if the other gene in the allele pair is also recessive. As a result, it is not expressed phenotypically in every generation.
The frequency of the allele represents the percentage of that allele in the gene pool
A carrier is someone who does not have a disorder but carries the allele on to offspring.
The Dominant Allele.
When a is inherited from only one parent the offspring will have that genetic condition or charicteristic?
A recessive allele is expressed if in the genotype there are two recessive genes. If there is a dominant gene it will mask the recessive.
If the the trait is controlled by only one allele and the allele is completely dominant then once inherited the offspring with exhibit that phenotype
The recessive trait shows when the offspring has two recessive alleles and no dominant allele (aa instead of AA or Aa).
Well, a dominant allele carries dominant traits from parents to offspring. An example of a dominant trait is brown hair and brown eyes because these traits are most likely to show up on a human than a recessive allele. A recessive allele may carry a recessive trait from parents to offspring such as blonde hair and blue eyes, these are uncommon because they are recessive traits.
it means that the trait/allele will show up on its offspring (unless its some special cases like incomplete dominant or codominant, etc.)
If T represents the allele for tall pea plants and t represents the allele fo short pea plants what is the phenotype of each parent and of the offspring?
tall and short
Yes. When looking at Gregor Mendel's laws of inheritance, the Dominant allele will always be inherited by the offspring, as it is more potent than the 'weaker' recessive allele (unless the recessive allele is present in both parents; this can be in the form of Aa or aa, but it must be present in both for the recessive allele to be present in the offspring). There are other cases, though, such as co-dominance, in which… Read More
In a cross with a mother who carries the allele for hemophilia and a father who has normal blood clotting what would be the phenotypes of the offspring?
In a cross with a mother who carries the allele for hemophilia and a father who does not (normal blood clotting), the genotype of the offspring would be one female who carries the allele, one female who does not carry the allele, one male who does not, and one male who does. This male who the carries the allele would be a hemophiliac. The phenotype is what a person would see: two normal females, one… Read More
No to have an AB child the parents must have an A allele in one ine parent and a B in the other so that when they reproduce those two alleles (foumd on the chromosome) can be passed to the offspring and hence the child will be AB blood group. As the father is O (which is a recessive allele) he cannot have either an A or B allele and so the offspring will always… Read More
The answer to your seventh grade science hw is none of the offspring