Back cross, Biology

Assignment Help:

BACK CROSS

When F1 individual (Tt) is crossed with one of the two parents, either tall (TT) or dwarf (tt), such a cross is called the back cross. There are two possibilities in such a cross : -

(i)         When F1 (Tt) is crossed with the dominant homozygous (TT) parent, the plants produce will be 100% tall.

(ii)         If F1 (Tt) is crossed with recessive homozygous (tt), 50% plants will be tall and 50% dwarf.

Uses of a Back Cross

Back crosses are used by plant breeders to rapidly improve a variety by making a useful trait (gene) homozygous, that is pure.


Related Discussions:- Back cross

VASCULAR PLANTS., WHAT TRAITS ALLOWED VASCULAR PLANTS TO GROW TALL

WHAT TRAITS ALLOWED VASCULAR PLANTS TO GROW TALL

Indications of phototherapy, Indications i) When there is an abnormal...

Indications i) When there is an abnormal rise in the bilirubin level which may be due to physiological or pathological jaundice or any other problem. ii) Prophylactic ph

How identical proteins form, Are proteins with the same number of each diff...

Are proteins with the same number of each different amino acid that form them necessarily identical proteins? Even if many proteins have the similar number of each dissimilar a

Genetic material, Assuming that variability of populations were non-genetic...

Assuming that variability of populations were non-genetic, that is, not controlled by genetic material, once again chance events alone would determine which of the organisms would

Study of phylems, iwant to know all about phylem protozoa?

iwant to know all about phylem protozoa?

Possible factors contributing to environmental disasters, 1.      The Combi...

1.      The Combination Of Rapid Industrial Growth, Lack Of Regulations, Inadequate Supervision Of Safety Measures By The Authorities And Lack Of Sufficient Opportunities For The L

What is alkaline phosphatase, Question 1 Discuss the quantitative methods ...

Question 1 Discuss the quantitative methods for the estimation of urinary proteins. What are the instructions to be given to a patient while collecting urine for biochemical exami

How do cells obtain energy for their functioning, How do cells obtain energ...

How do cells obtain energy for their functioning? Cells obtain energy for their metabolic reactions from the breaking of organic molecules with high energetic content. This ene

Which type of molecule does each of these enzymes break, Besides the pancre...

Besides the pancreatic juice in the intestine there is the releasing of the enteric juice that having digestive enzymes too. What are these enzymes and which type of molecule does

Explain the origins of replication, Normal 0 false false fa...

Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd