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Q: In tomato plants the tall vine allele (T) is dominant to the short vine allele (t). Two tomato plants are crossed. Among the offspring plants grown from seed 45 have tall vines and 55 have shrt vines.?
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When mendel crossed true breeding tall plants with true breeding short plants all the offspring were tall because?

I think not as tall is the dominant allele here.T = tallt = shortTT X ttall would beTt======and tall.


When Mendel crossed purebred short plants with purebred tall plants all of the offspring were?

I think not as tall is the dominant allele here.T = tallt = shortTT X ttall would beTt======and tall.


What is the height of the f1 plant if the tall plant AABBCC is crossed with a base height plant aabbcc?

In such a cross, the F1 plants will always be tall, because that is the dominant allele. In the cross described, a homozygous dominant plant was crossed with a homozygous recessive plant; a cross that produces 100% heterozygous offspring. (AaBbCc)


When mendel crossed a strain of tall pea plants with a strain of short pea plants he observed that all of the plants in the F generation were tall this suggests that?

All of the offspring had at least one dominant tall allele. All of the offspring in the F1 generation were heterozygous "Tt" meaning they each had one tall allele "T" and one short allele "t". It also suggest that one parent was homozygous tall TT and the other was homozygous short "tt."


In pea plants tall (T) plants are dominant over short (t) plants. If a heterozygous (Tt) pea plant is crossed with a homozygous dominant (TT) pea plant all of the resulting pea plants should be tall (?

Dominant Allele


purple petal color in pea plants is dominant to white petal color two heterozygous pea plants are crossed what is the ratio of the offspring with white petals to the number total number of offspring?

3:1 ratio Two pea plants, both heterozygous for flower color, are crossed. The offspring will show the dominant purple coloration in a 3:1 ratio


Two true-breeding pea plants are crossed one with purple flowers and the other with white. Their offspring are?

If two true-breeding pea plants are crossed their offspring will show the dominant trait. The flowers will be purple or light purple.


How can albinism in plants keep occurring if they cannot reproduce?

because the recessive allele is still present in heterozygous individuals. these individuals have one dominant allele and so show the dominant phenotype but they are capable of producing offspring with the recessive condition


What was the result when gregor mendel crossed a tall plant and a short plant?

Since the dominant allele in pea plant breeding is the tall allele, all of the offspring of this cross were tall. However, when he crossed two tall plants from the first filial generation, 75% of the second filial generation were tall, and 25% of the second filial generation were short, thus hinting at the mechanism of what we today recognize as genetic inheritance.


Why were all the offsprins purple when gregor menel crossed true breeding purple flowered plants with true breeding white flowered plants?

All the offspring were purple because Mendel was dealing with simple genetic dominance. The purple true breeding parent was homozygous dominant and the true breeding white parent was homozygous recessive. When those two are crossed they create only heterozygous offspring (look up a punnett) and since this is simple dominance those heterozygous will show the phenotype of the dominant allele which is purple.


Do all plants inherit one dominant allele?

no


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.