Question
Sam and John can complete a piece of work in 8 days and
12 days respectively. They work together but after 2 days, Sam leaves. John finishes the remaining work alone. Find out the fraction of the work done by John.Solution
ATQ, Let the total amount of work be 24units (LCM of 8 and 12) Efficiency of Sam = 24/8 = 3 units/day Efficiency of John = 24/12 = 2 units/day Work done together in 2 days = (3+2) × 2 = 10 units Remaining work = 24-10 = 14 units, completed by John alone. Units of work done by John = 14+(2×2) = 14 +4 = 18 units Part of work done by John = 18/24 = 3/4
The technique of making numerable copies of gene is called as?
Mendel chose ………….. pairs of contrasting characters for his study. In all the above crosses he obtained a definite phenotypic ratio of ………...
Which one of the following is not the law as per genetics?
Which of the following micro organism is used in genetic engineering?Â
Which of the following characters is not typical to class Mammalia?
Sex-influenced traits are autosomal qualities that are impacted by sex. An example of sex influenced traits is
The gene is considered the basic unit of inheritance which are passed from parents to offspring. The alternate form of a gene is termed as
When one single gene starts affecting multiple traits of living organisms, this phenomenon is known as…………………..
...A cross between an inbred line and an open pollinated variety also known as
The type of inheritance in which a sex linked gene is inherited from grandfather to grandson through daughter is called as
