Analysis Directions Complete the questions below. These questions are intended t

Question

Analysis

Directions

Complete the questions below. These questions are intended to enhance critical-thinking skills by applying knowledge obtained from the lab activities into real-world challenges.

• If ratios or probabilities are asked for, your answer should involve fractions or a percent.

• If phenotypes are asked for, describe the traits.

• If genotypes are asked for, describe alleles using the letter symbols like Aa (e.g., a genotypic ratio might be: 1/3 AA, 1/3 Aa, 1/3 aa, and a phenotypic ratio might be: 3 short, 1 tall or 3:1).

1. Solve for the type of inheritance in punnet square form and explain the rationale of your choice:

a. Mice: red-eyed mouse X white-eyed mouse gives F1: all red-eyed

b. Flowers: blue-flowered plant X white-flowered plant gives F1: all pale-blue-flowered

c. Flowers: pale-blue F1 X pale-blue F1 gives F2:

i. 27 blue

ii. 49 pale-blue

iii. 24 white

d. Blood Type: cross 1: type A blood X type B gives F1:

i. 2 type A blood

ii. 3 type AB blood

iii. 1 type B blood

iv. 2 type O blood

Explanation / Answer

Ex:If the probability of particular individual is .25 the quantity is one fourth of the population.

Phenotype is composite of organisms observable characteristics like morphology,developement,biochemical or physiological properties,behavior,and behavioral products.Or simply you can tell it is organisms physical appearance.

Now coming to phenotypic traits(or simply you can call as trait),is a distinct variant of phenotypic characteristic of an organism,either inherited or determined environmentally,but usually occurs asa combination of both.

For ex:EYE COLOR OF AN ORGANISM-CHARATCTER.

BLUE,BROWN,HAZEL(traits).

GENOTYPE IS ORGANISMS REAL GENETICS(THE GENES IT CARRIES)

Every organism has 2 copies of every genes'each gene from each parent.So there are pairs for traits.These copies of genes may not be exactly alike.THESE DIFFERENT VERSIONS OF TRAIT(GENE) ARE CALLED ALLELES.

There are certain rules for writing genotypes(writing alleles).

Terms of genotypic dominance:

Homozygous dominance:BB

Homozygous recessive:bb

Heterozygous:Bb

1.a.

In a cross between RED EYED MOUSE AND WHITE EYED MOUSE,gives all red mice.

In the above example,eye color is controlled by one gene that has 2 alleles producing 2 phenotypes i.e.red and white eyes.The RED eye phenotype is likely dominant.

THANK YOU.

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