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In this case, when a gray fruit fly heterozygous for the alleles for body color is crossed with one that has a black body, all offspring will have a 50% chance of inheriting the gray body color and a 50% chance of inheriting the black body color. This is due to the fact that the gray body color allele is dominant and the black body color allele is recessive.
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In watermelons the genes for green colour and short shape are dominant over their alleles for striped colour and long shape If a plant with long striped fruit is crossed with a plant heterozygous f?
If a plant with long striped fruit is crossed with a plant heterozygous for green and short fruit, the offspring will all have green and short fruit due to the dominance of those traits. The genotype of the heterozygous parent would be GgSs, and the genotype of the long striped fruit plant would be ggss. The offspring will inherit one dominant allele for green (G) and one dominant allele for short (S) from the heterozygous parent, resulting in their green and short fruit.
How do dominant and recessive alleles affect pheno type?
An allele can effect the phenotype of an organism by its dominance or recessiveness. If two dominant alleles are crossed the offsprings will carry the dominant trait of the alleles. If a dominant allele is crossed with recessive allele the phenotype of the offsprings will be of that of the dominant allele. And if two recessive alleles are crossed the phenotype of their offsprings will carry the reccesive trait.
Suppose that a gray fruit fly heterozygous for the alleles for body color is crossed with one that has a black body What percentage of the offspring would you expect to have black bodies?
You would expect 50% of the offspring to have black bodies. This is because the offspring will inherit one allele for black body color from the black parent, and one allele for gray body color from the heterozygous gray parent. The black allele is dominant over the gray allele.
Two plants are crossed resulting in offspring with a 3 to1 ratio for a particular trait This suggests?
The 3:1 ratio for a particular trait suggests that the trait is determined by a single gene with two alleles. It indicates that one parent is homozygous dominant for the trait, one parent is homozygous recessive, and the offspring are heterozygous.
If a female fruit fly heterozygous for red eyes crossed with a white eyed male what percent of their offspring would have white eyes?
All the offspring will have red eyes because the trait for red eyes is dominant and the female is heterozygous (carrying one dominant red eye allele). White eyes are recessive, so the offspring would need to inherit two white eye alleles to have white eyes.
In pea plants purple flowers are dominant over white flowers. Two plants both heterozygous for the gene that controls flower color are crossed. What percentage of their offspring will have purple flow?
This job
In watermelons the genes for green colour and short shape are dominant over their alleles for striped colour and long shape If a plant with long striped fruit is crossed with a plant heterozygous f?
If a plant with long striped fruit is crossed with a plant heterozygous for green and short fruit, the offspring will all have green and short fruit due to the dominance of those traits. The genotype of the heterozygous parent would be GgSs, and the genotype of the long striped fruit plant would be ggss. The offspring will inherit one dominant allele for green (G) and one dominant allele for short (S) from the heterozygous parent, resulting in their green and short fruit.
If a homozygous dominant parent and a heterozygous parent are crossed what percentage of the offspring are expected to be homozygous dominant?
Rr
How do dominant and recessive alleles affect pheno type?
An allele can effect the phenotype of an organism by its dominance or recessiveness. If two dominant alleles are crossed the offsprings will carry the dominant trait of the alleles. If a dominant allele is crossed with recessive allele the phenotype of the offsprings will be of that of the dominant allele. And if two recessive alleles are crossed the phenotype of their offsprings will carry the reccesive trait.
In fruit flies, gray body color is dominant over black body color. Suppose two fruit flies heterozygous for the alleles that carry body color are crossed and 200 offspring are produced. How many would you expect to have black bodies?
50
Suppose that a gray fruit fly heterozygous for the alleles for body color is crossed with one that has a black body What percentage of the offspring would you expect to have black bodies?
You would expect 50% of the offspring to have black bodies. This is because the offspring will inherit one allele for black body color from the black parent, and one allele for gray body color from the heterozygous gray parent. The black allele is dominant over the gray allele.
Two plants are crossed resulting in offspring with a 3 to1 ratio for a particular trait This suggests?
The 3:1 ratio for a particular trait suggests that the trait is determined by a single gene with two alleles. It indicates that one parent is homozygous dominant for the trait, one parent is homozygous recessive, and the offspring are heterozygous.
If a female fruit fly heterozygous for red eyes crossed with a white eyed male what percent of their offspring would have white eyes?
All the offspring will have red eyes because the trait for red eyes is dominant and the female is heterozygous (carrying one dominant red eye allele). White eyes are recessive, so the offspring would need to inherit two white eye alleles to have white eyes.
What does a 1 to 1 phenotypic ratio in a test cross indicate?
A 1:1 phenotypic ratio in a test cross indicates that the organism being tested is heterozygous for a particular trait and is crossed with a homozygous recessive individual. This ratio suggests that the dominant and recessive traits are expressed equally among the offspring, with half exhibiting the dominant phenotype and half exhibiting the recessive phenotype. It confirms the presence of both alleles in the heterozygous parent.
A parent that is homozygous for a dominant trait is crossed with a parent that is homozygous for the recessive trait What percentage of the offspring will display the dominant trait?
100% of the offspring will display the dominant trait because the homozygous dominant parent can only pass on the dominant allele. The offspring will inherit one dominant allele from the dominant parent and one recessive allele from the recessive parent, resulting in a heterozygous genotype expressing the dominant trait.
How is a dominant trait represented in a punnett square?
Dominant alleles are written in upper case (i.e, 'A'), while recessive alleles are lower case (i.e, 'a')
A true breeding tall plant was crossed with a true breeding short plant If alleles did not segregate during gamete formation?
All offspring would be heterozygous for the gene controlling plant height. This is because if alleles do not segregate, they remain together and are passed on as a unit. The offspring plants would all be tall because the allele for tallness is dominant over the allele for shortness.
