Complete answer: In this type of cross if the offspring appears to be all tall then we can say that the parent pea plant was homozygous in nature. If the cross between the dwarf and tall pea plants yields equal amounts of tall and dwarf offspring then we can say that the tall plant had heterozygous genotype.
How can you tell if a pea plant is homozygous or heterozygous?
Heterozygous means that an organism has two different alleles of a gene. For example, pea plants can have red flowers and either be homozygous dominant (red-red), or heterozygous (red-white). If they have white flowers, then they are homozygous recessive (white-white). Carriers are always heterozygous.
How do you determine if a tall plant is heterozygous or homozygous?
Homozygous plants have two identical copies of a single gene. Heterozygous plants have two copies of a single gene, but those copies are alleles, or different versions of that gene. The second type is heterozygous. Plants that are heterozygous for a particular gene have one copy each of two different alleles, ‘Aa’.
Is a tall pea plant homozygous or heterozygous?
Use a Punnett square to predict the offspring in a cross between a dwarf pea plant (homozygous recessive) and a tall pea plant (heterozygous).
What do you understand by homozygous tall plant and heterozygous tall plant?
Complete answer:
Heterozygous is a condition when there are two different traits of a particular gene. Homozygous is a condition when there are identical traits of a particular gene.
Is BB homozygous or heterozygous?
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 the difference in homozygous and heterozygous?
Being homozygous for a particular gene means you inherited two identical versions. It’s the opposite of a heterozygous genotype, where the alleles are different. People who have recessive traits, like blue eyes or red hair, are always homozygous for that gene.
What is the genotype of a heterozygous tall plant?
Answer and Explanation: A heterozygous tall plant will have a genotype of Tt. T is mainly the dominant allele and will actually rule over the t allele, which is recessive.
When a plant homozygous for tall is crossed?
ANSWER: The condition given is that a plant (Homozygous tall) is crossed with a plant (Homozygous dwarf), then the appearance of the plats or saplings at the F₁ generation would be all tall plants. The plants are homozygous tall, so their alleles will be the same.
Is HH heterozygous or homozygous?
Individuals with dominant phenotypes can be either homozygous (HH) or heterozygous (Hh). When a recessive (hh) is selected against, a reservoir of recessive alleles remains in the heterozygotes (Hh) of the dominant phenotype.
How do you determine the genotype of a tall pea plant?
Solution : To determine the genotype of a tall pea plant, a test cross is made in which the tall pea plant with be crossed with a drawf pea plant.
Can short pea plants be heterozygous?
Since 1 out of 4 pea plants are short, or 1/4, the probability of a short pea plant from a heterozygous cross is 25%.
What is the genotype of hybrid tall pea plant?
“Tt”
Hybrids are the one which carries contrasting allele of a particular gene; for example, hybrid tall plant’s genotype is “Tt”. Segregation of these contrasting factors of hybrid produces both tall and dwarf plants in the progeny.
What percent is homozygous tall?
So, the correct option is ‘50%‘.
When did Mendel crossed a homozygous tall pea plant?
In one of the experiments with pea plants, Mendel observed that when a homozygous tall pea plant (TT) is crossed with a homozygous dwarf pea plant (tt), in the first generation, only tall plants appear.
When a homozygous tall pea plant is crossed with heterozygous tall plant what will be the phenotypic ratio of progeny?
Answer. Explanation: The phenotypic ratio will be 1 tall:1 dwarf.
What would be the easiest way to determine whether it is homozygous or heterozygous?
To identify whether an organism exhibiting a dominant trait is homozygous or heterozygous for a specific allele, a scientist can perform a test cross. The organism in question is crossed with an organism that is homozygous for the recessive trait, and the offspring of the test cross are examined.
Is BB and BB homozygous?
The remaining terms to discuss pertain to the compositions of the genotypes. A genotype such as either BB or bb the alleles are identical. An individual with this type of genotype is called homozygous.
Is DD a heterozygous or homozygous?
HETEROZYGOUS
Susan’s genotype is “Dd”, so she is considered HETEROZYGOUS (has two different alleles for a specific gene). Although Susan has both the allele “D” to make dimples and the allele “d” in her genotype, her phenotype is the presence of dimples.
How do you know if you are heterozygous?
For every gene, you inherit two alleles: one from your biological father and one from your biological mother. Together, these alleles are called a genotype. If the two versions are different, you have a heterozygous genotype for that gene.
What’s an example of heterozygous?
One such example is the genetic inheritance of brown eyes, which is dominant, and blue eyes, which is recessive. If the alleles are heterozygous, the dominant allele would express itself over the recessive allele, resulting in brown eyes.