Answer:
See the answer below
Explanation:
The Chi-square (
) is calculated by the formula:
= 
where O = observed frequency and E = expected frequency
A standard dihybrid cross is expected to give 9:3:3:1 phenotypic ratio.
Phenotype O E
Round yellow 104 9/16 x 160 = 90 
= 2.18
Round green 27 3/16 x 160 = 30 
= 0.30
wringled yellow 27 3/16 x 160 = 30 = 0.30
wrinkled green 2 1/16 x 160 = 10 
= 6.40
Total value to two decimal places = 9.18
Degree of freedom = (n-1) = 4 -1 = 3
Critical value at 95% probabillity level = 7.815
<em>Since the calculated </em><em> si more than the critical </em><em> value, </em><em>the null hypothesis is rejected. </em>
"As elevation increases, air pressure decreases." could be a good claim. for evidence you could put" when the elevation was 33 feet in ny, the air pressure was 29.92, when the elevation was 594 in chicago, the airpressurewas 29.87, the elevation increased from ny to chicago whil air pressure decreased." for reasoning you could put "The elevation in new york was 33 feet, and the elevation in chicago is greater(594). The air pressure in new york is 29.92, an the air pressure in chicago is 29.87. 29.87 is less than 29.92, therefore the air pressure decreases as elevation increases"or something of that sort. hope this helps!
The centrioles first begin to move to opposite sides of the cell.
<span>D) An organism can “make a living” and survive in its niche.
Because niche refers to an organisms role in an ecological system; its position in the environment - how it survives and multiply.</span>
