Question

need help on both please

Question 34 (1 point) Since Dr. Jordan loves plants so much, she decides to cross true breeding blood rec calla lilies (RR) to true breeding lily white calla lilies (rr). What are the phenotypic ratios? 1) 2 blood red lilies 2) all blood red lilies 3) 3 blood red lilies Question 35 (1 point) What is the science of heredity, or how specific characteristics (genes) are passed down from generation to generation? a) Genetics b) DNA O c) Phenotype d) Genotype

Answer 1

Q.34) Answer - 3 blood red lilies

Explanation -

                             

જજ x RR blood red llies calla) (white colla calla) lilies - f generation RG (Heberozygous) (blood reed calla lilies) Rr X Rg Gametes 8 RR Ra Ra do (2 I white call lities ( 3 Blood reed calla lilies ello

In the figure, when true breeding blood red calla lilies are crossed with true breeding white calla lilies, the F1 generation will be blood red calla lilies but heterozygous. When the F1 generation heterozygous are self crossed then in F2 generation 3 blood red calla lilies and 1 white calla lily will appear. So, the phenotypic ratio will be 3:1. But the genotypic ratio is 1:2:1. As 2 blood red calla lilies are heterozygous for the trait and other two lilies are homozygous for the trait, from which one is blood red lily and the other is white lily.

Q.35) Answer - Genetics

Genetics is the science of heredity, or how specific characteristics (genes) are passed down from generation to generation.

Explanation - Genetics is the study of how the traits are transmitted from parents to offspring.

DNA is the genetic material which carries the information and the DNA is passed down from parents to offsprings. Each offsping gets 50% DNA from each of parents. Similarly the parents receive their 50% DNA from each of their parents.

Phenotype is the observable characteristics of an organism such as height, hair colour, eye colour etc.

Genotype refers to the genetic constitution of an organism which is expressed to different characteristics or phenotypes.