In pea plants,
tall alleles (T) are dominant
and short alleles (t) are recessive.
What are the dominant traits in pea plants?
| Trait Dominant Expression Recessive Expression | Form of ripe seed (R) Smooth Wrinkled | Color of seed albumen (Y) Yellow Green | Color of flower (P) Purple White | Form of ripe pods (I) Inflated Constricted |
|---|
Are tall pea plants dominant or recessive?
In pea plants,
tall is dominant over short
. The genotypes (the allele parings) of the offspring are all Tt (4/4 = 100%). while the phenotypes (what we can physically observe in the offspring) are all tall (4/4 = 100%). This is the F1 generation (F for filial, or the first generation of offspring).
Is a tall pea plants dominant to short?
In pea plants,
tall (T) plants are dominant over short (t) plants
. … A cross between two pea plants produces offspring in which approximately 50% of the flowers are white and 50% are purple.
Are tall stems dominant or recessive?
Therefore,
tall stems are dominant
.
When you cross a tall pea plant with a short pea plant the offspring will be?
When a tall and short plant are crossed,
all of the offspring are tall
. If the offspring self-fertilize, they produce tall and short plants in a ratio of 3:1 in the next generation.
Why did Mendel choose pea plants?
Mendel studied inheritance in peas (Pisum sativum). He chose peas
because they had been used for similar studies, are easy to grow and can be sown each year
. Pea flowers contain both male and female parts, called stamen and stigma, and usually self-pollinate.
Why are the offspring tall when a tall pea plant is crossed with a short pea plant?
Answer: When a tall pea plant is crossed with a short pea plant, the resultant progeny is always tall
because tall is dominant trait and short is recessive trait
. Therefore, dominant trait expresses itself in the progeny.
What genotype would a short pea plant have?
| 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 makes one pea plant tall and one pea plant short?
The trait of height for a pea plant is determined by
two genes, one from each parent
. Each trait of an organism is determined by at least one gene from each parent. Homozygous Plants Mendel found that one kind of pea plant always had tall offspring. … Mendel called these plants homozygous short.
What are two alleles for tall stems?
In the cross above stem height or stem length is being studied. The two alleles are tall stems and short stems. The
dominant allele
Why is pea plant that is a hybrid for stem height tall?
Hybrid pea plant is stem height tall
because it has one dominant and one recessive allele
. In situation like this, dominant allele
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.
When two heterozygous tall pea plants are crossed what would the expected?
| Question Answer | When two heterozygous tall pea plants are crossed, the expected genotype ratio of the offspring is _________________________. 1:2:1 | An organism’s gametes have ____________________ the number of chromosomes found in the organism’s body cells. half |
|---|
When roan cattle are crossed 25 of the offspring?
When roan cattle are crossed, 25% of the offspring produced
will have white coats
, 50% will have roan coats, and 25% will have red coats.
