the correct answer is A. an explanation inspires new questions and the process of making new observations.
Answer: The phases of the moon and the progression of Earth’s seasons are not specifically connected, but they hinge on similar processes: one astronomical body revolving around another. Both phenomena, along with the cycle of day and night, define the most intrinsic of earthly schedules.
Earth, Moon, Sun
The sun is the focus of our solar system, holding in its gravitational pull a collection of satellites that includes the nine planets. Earth, the third planet in distance from the sun, requires a little over 365 days to complete its orbit around the star. Caught in the influence of Earth’s own gravity is its moon, which takes 28 Earth days for its revolution around our planet, and is illuminated by various degrees of reflected sunlight.
Lunar Phases
During its 28-day orbital cycle, the moon rotates on its axis once, and thus presents the same face to the Earth; the “dark side” always points away from the planet. But the moon's appearance changes throughout that orbit in a succession of lunar phases, determined by the moon’s position in relation to the Earth and sun. When the Earth lies between the moon and sun, there is a “full moon." The moon reflects its maximum amount of sunlight at this time. When the opposite configuration is true--the moon is between Earth and sun--the moon is cast in shadow, manifesting as a “new moon.”
<h2>Question 1.</h2><h2>Answer:</h2>
The correct answer is option D which is 100%.
<h3>Explanation:</h3>
According to the description of Punnett square given in the question, there will be there will be two types of genotype and one type of phenotype which is yellow.
- YY, homozygous dominant = Yellow Seeds.
- Yy, heterozygous = Yellow Seeds
- So the progeny will be 100% of yellow seeds.
Punnett square is also attached.
<h2>Question No.2.</h2><h2>Answer:</h2>
The correct answer is the option A which predicts the genotypic and phenotypic probabilities of possible.
<h3>Explanation:</h3>
<u><em>Punnett square is a way to determine the probable genotype of expected offspring by the genotypes of father and mother devised by Punnett.</em></u>
- In this method, A square shaped table is constructed and the alleles of the gene of father/male are written on the top of tables, on the column.
- The alleles of the mother are written in horizontal to square, in front of rows.
- So the genotypes in the square box by multiplying row and column alleles will be expected genotype of an offspring.
- The example is attached below.
<h2>Question no. 3.</h2><h2>Answer:</h2>
The correct answer is option C which is 1 = TT; 2 = Tt; 3 = Tt; 4 = tt .
<h3>Explanation:</h3>
The Punnett square is made by the description given in the question.
There are total 4 boxes. In box number 1 which is on top left genotype is TT and in box 2 which is on top right genotype is Tt. In box 3, the genotype is Tt and in box 4, the genotype is tt.
So according to the given Punnett square information in option C is correct one.
Parent #1 has the alleles of IA and i
Parent #2 has the alleles of IB and i
A punnet squares is a simple diagram that illustrates the possible genotypes of the offspring of these two people.
Parent #1 is across the top and Parent #2 is along the side
IA i
IB AB IBi
i IAi ii
For IA or IB will be dominant to i. So for phenotype purposes their offspring have a 25% chande of being AB, 25% chance of B, 25% chance of A and a 25% change of type O (ii)
Answer and Explanation:
Principal of Spiral plating:In the spiral plate technique, a mechanical plater vaccinates the fluid sample on a pivoting plate agar. The volume of fluid sample decline from the inside to the edge of the plate. The microbial concentration is controlled by checking the provinces on a piece of the Petri dish.
A technique, portrayed for deciding the quantity of microorganisms in an solution by the utilization of a machine which stores a known volume of test on a pivoting agar plate in a consistently diminishing sum as an Archimedes spiral.
Materials used: agar plates, dilution blanks, pipettes
Method:
A spiral plater is a gadget that disperses a constantly diminishing volume of fluid over a solitary pivoting agar plate (the apportioning arm moves like a needle on a turntable, just in reverse). The agar is then hatched and checks are made. It can viably convey up to a 105 concentration range on one plate, yet list requires an uncommon tallying lattice. After the example is brooded, distinctive state densities are clear on the outside of the plate. A changed checking matrix is portrayed which relates zone of the plate of volume of test. By checking a proper territory of the plate, the quantity of microscopic organisms in the example is assessed.
