When pink sweet peas were self-pollinated and the sceds were collected and sown, the following flower colors were obtained
red 34
pink 76
white 40
use a chi-squared test to determine whether these results are consistent with the hypothesis that pink flowers are heterozygous for a single pair we predict for our null hypothesis?
a. 9: 3: 4
b. 3: 1: 0
c. 1: 2: 1
d. 1: 4: 1

The proportions 1:2:1 are consistent with thenull hypothesis that the pink flowers are heterozygous for a single pair.

Option C

Explanation:

Chi square test is used to

(i)  Find significant difference in two or more than two proportions

(ii)The goodness of fit between the observed and expected frequency.                    

= 0.3266 + 0.0133 + 0.1666 = 0.506

5%  Critical value = 5.991

Degree of freedom = 2

the nitrogen cycle provides nitrogen to the ecosystem from the atmosphere, ground and oceans. nitrogen is an important component of complex molecules such as amino acids and nucleotides, which lead to the creation of proteins and dna, the building blocks of all life. plants absorb nitrogen in the form of ammonium, nitrate ion and, on rare occasions, as amino acids. animals receive nitrogen necessary for biological processes from feeding on living or dead organic matter.