Answer and Explanation: A heterozygous tall plant will have a genotype of Tt.
What is the genotype of heterozygous for height?
TT
| Genotype Symbol | Genotype Vocab | Phenotype |
|---|---|---|
| TT | homozygous DOMINANT or pure tall | tall |
| Tt | heterozygous or hybrid | tall |
| tt | homozygous RECESSIVE or pure short | short |
What is the genotype of a pea plant homozygous for height?
genotype TT
a homozygous tall pea plant will have the genotype TT. A homozygous short pea plant will have the genotype tt.
What is the phenotype of a pea plant?
The phenotype is the actual physical features shown by the organism. In pea plants, like in the example above, if the dominant allele for purple flowers is present in the genotype, then the phenotype would be purple.
Why would a pea plant that is heterozygous for plant height have dominant phenotype?
Why would a pea plant that is heterozygous for plant height have the dominant phenotype? The dominant allele overpowers the recessive allele, causing the plant to be tall.
How do you find the phenotype?
To find a phenotypic ratio, we look at the alleles of the parent organisms and estimate how often those genes will be exhibited by the offspring. Most times, we know what the alleles will express and how they will look.
What is the phenotype of the heterozygous plant?
The phenotype of the heterozygous plant is green pods. The genotype of the heterozygous plant is Aa. The genotype of the plant with yellow pods is aa. The genotype of the gametes produced by the heterozygous plant is 50% A and 50% a.
What are the genotypes of a homozygous and a heterozygous tall pea plant?
Thus, if the result is all tall plants then the genotype of the parent will be homozygous dominant (TT) and if the result is 50% tall and 50% dwarf then the parent will be heterozygous dominant (Tt).
How do you tell if a tall pea plant is homozygous or heterozygous?
Explanation:
- A test cross is performed on a tall pea plant to determine its genotype.
- The gametes containing allele ‘T’ and ‘t’ will be in the ratio of 1;1 if the given tall plant is heterozygous.
Is BB heterozygous or homozygous?
An organism with two dominant alleles for a trait is said to have a homozygous dominant genotype. Using the eye color example, this genotype is written BB. An organism with one dominant allele and one recessive allele is said to have a heterozygous genotype.
What is phenotype and genotype of pea plant?
An organism’s genotype is its specific combination of alleles for a given gene. So, for example, in the pea plants above, the possible genotypes for the flower-color gene were red-red, red-white, and white-white. The phenotype is the physical manifestation of an organism’s allellic combination (genotype).
How many phenotypes do pea plants have?
seven distinct
Key Points. Mendel used pea plants with seven distinct traits or phenotypes to determine the pattern of inheritance and the underlying genotypes.
What is phenotype example?
Examples of phenotypes include height, wing length, and hair color. Phenotypes also include observable characteristics that can be measured in the laboratory, such as levels of hormones or blood cells.
Why human with heterozygous genotype will have the dominant phenotype?
Unlike homozygous, being heterozygous means you have two different alleles. You inherited a different version from each parent. In a heterozygous genotype, the dominant allele overrules the recessive one. Therefore, the dominant trait will be expressed.
What is phenotype and genotype with examples?
The phenotype is determined by an individual’s genotype and expressed genes or by visible trait, for instance, hair colour or type, eye colour body shape, and height. It depends on the genotype but also influenced by the factors in the environment.
How do you find the genotype and phenotype ratio?
To estimate the genotypic and phenotypic ratio, calculate the number of Punnett squares with each allele combination. So, in this example, one Punnett square for both RR and rr and two Punnett square boxes for Rr. Calculating Punnett square ratios as 1:2:1 will give the genotypic ratio.
What is a phenotype in a Punnett square?
▪ Genotype: The letters that make up the individual. E.g. TT or Tt. ▪ Phenotype: The physical characteristics of the particular trait. E.g. Tall or short.
What is the phenotype of a heterozygous four o’clock flower?
INCOMPLETE DOMINANCE: In Four O’Clock plants RED FLOWERS (R) are INCOMPLETELY DOMINANT over white (r) flowers. Heterozygous plants show a BLENDED INTERMEDIATE phenotype of PINK flowers.
Which phenotype does a heterozygous genotype Express?
Specifically, heterozygous (Ss) individuals express both normal and sickle hemoglobin, so they have a mixture of normal and sickle red blood cells. In most situations, individuals who are heterozygous for sickle-cell anemia are phenotypically normal. Under these circumstances, sickle-cell disease is a recessive trait.
What is a heterozygous genotype?
(HEH-teh-roh-ZY-gus JEE-noh-tipe) The presence of two different alleles at a particular gene locus. A heterozygous genotype may include one normal allele and one mutated allele or two different mutated alleles (compound heterozygote).
Which of the following genotypes is heterozygous?
Answer and Explanation: The correct answer: Among the following genotypes the heterozygous genotypes are: 3. Aa and 4. Qq.