SECTION A: Answer ALL 3 questions. 1. (a) Define the following terms. (b) Describe the role of the kidney in…

Question

SECTION A: Answer ALL 3 questions. 1. (a) Define the following terms. (b) Describe the role of the kidney in osmoregulation. (c) Explain how the human body regulates the amount of sugar level in blood.

ScanSolve AI Tutor · Accepted Answer

Let's break down these genetics questions.

6. (b) Using genetic symbols and diagrams explain the results of this cross.

Define the alleles for flower color.
Since crossing red and white flowers results in pink flowers, this indicates incomplete dominance.
Let the allele for red color be $R$ .
Let the allele for white color be $W$ .
The genotype for a pure breed red flower is $RR$ .
The genotype for a pure breed white flower is $WW$ .
The genotype for a pink flower (intermediate phenotype) is $RW$ .
Perform the cross between a pure breed red flower and a pure breed white flower (P generation).
$\text{Parents (P): } RR \text{ (Red)} \times WW \text{ (White)}$ $\text{Gametes: } R, W$
Determine the genotypes and phenotypes of the F1 generation.
$\text{F1 Genotype: } RW$ $\text{F1 Phenotype: } \text{All Pink flowers}$
All the offspring in the first filial (F1) generation will have the genotype $RW$ and will express the pink phenotype.

6. (c) What would be the outcome of a cross between the pink flowers and the red parent?
Identify the genotypes of the parents for this cross.
The pink flowers from the F1 generation have the genotype $RW$ .
The red parent (pure breed) has the genotype $RR$ .
Perform the cross between a pink flower and a red parent.
$\text{Parents: } RW \text{ (Pink)} \times RR \text{ (Red)}$ $\text{Gametes from Pink: } R, W$ $\text{Gametes from Red: } R$
Use a Punnett square to determine the genotypes and phenotypes of the offspring.
$\begin{array}{|c|c|c|} \hline \text{Gametes} & R & R \\ \hline R & RR & RR \\ \hline W & RW & RW \\ \hline \end{array}$
State the outcome of the cross.
The offspring genotypes would be:
- $50\% \ RR$
- $50\% \ RW$
The offspring phenotypes would be:
- $50\% \ \text{Red flowers}$
- $50\% \ \text{Pink flowers}$

SECTION A: Answer ALL 3 questions. 1. (a) Define the following terms. (b) Describe the role of the kidney in osmoregulation. (c) Explain how the human body regulates the amount of sugar level in blood.

Step-by-step solution

Define the alleles for flower color.

Perform the cross between a pure breed red flower and a pure breed white flower (P generation).

Determine the genotypes and phenotypes of the F1 generation.

Identify the genotypes of the parents for this cross.

Perform the cross between a pink flower and a red parent.

Use a Punnett square to determine the genotypes and phenotypes of the offspring.

State the outcome of the cross.

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