The gene for tallness (T) is dominant over the gene for
shortness (t) in pea plants. A homozygous dominant pea
plant is crossed with a heterozygous pea plant, and 200
seeds are produced. Approximately how many of these seeds
can be expected to produce plants that are homozygous
dominant?

Answer Posted / vishal agrawal

when a homozygous tall (TT) is crossed with heterozygous
tall (Tt) they will segregate in ratio of 1:1. Thus there
would be nearly 100 seeds of each type. thus the no. of
seeds for homozygous dominant would be 100.

Homozygous Tall (TT) x Heterozygous Tall (Tt)
|
|
|
V
TT, Tt
(1 : 1)

Is This Answer Correct ?    9 Yes 0 No



Post New Answer       View All Answers


Please Help Members By Posting Answers For Below Questions

A blastomere was removed from an 8-cell human embryo, and its beta-globin gene was amplified by PCR. The beta-globin DNA was treated with an enzyme that cuts on either side of and within the normal allele (producing a small fragment), but not within the sickle cell allele (producing a large fragment). Electrophoresis of the treated DNA from the blastomere demonstrated the presence of both a large and small fragment derived from the beta-globin genes. How should you interpret this test?

1571


Promoters of housekeeping genes contain variable numbers of GC boxes, but neither TATA nor CCAAT boxes.Inwhat way these properties of housekeeping promoters are helpful?

1680


What ethical dilemmas should be considered when genetic engineering is put into practice?

1761


Explain in terms of gene product function how a mutant allele can be dominant? recessive?

1512


Different between back cross and test cross

919






Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?

3786


What is the importance of genetics?

565


Can you name a few potential risks of Genetic Engineering?

1616


what is virgin sex?

2448


Is Genetic engineering the best of solution?

1684


What is the function of BCSP31gene of Brucella organism?

1238


how was highschool like for a person diagnosed with turner's syndrome? and really difficult subjects?

1718


Is Recombination in Human Mitochondrial DNA really possible?

1703


Does a person diagnosed with turner syndrome have trouble hearing? please reply if you have this syndrome or know someone who does.

2179


What is your personal opinion regarding genetic engineering and human cloning?

2638