Question

problem 3:
parents: two rabbits, one with black fur (homozygous dominant) and the other with white fur (homozygous recessive).
create a punnett square and determine the possible genotypes of the offspring.
what are the phenotypes and percentage chance of each phenotype?
genotypes
phenotypes
percentage chance
problem 4:
parents: two sunflowers, one with tall stems (homozygous dominant) and the other with short stems (homozygous recessive).
create a punnett square and determine the possible genotypes of the offspring.
what are the phenotypes and percentage chance of each phenotype?
genotypes
phenotypes
percentage chance

Explanation:

Problem 3 (Rabbits)

Step1: Assign allele symbols

Let $B$ = dominant black fur allele, $b$ = recessive white fur allele.
Parent 1 (homozygous dominant): $BB$; Parent 2 (homozygous recessive): $bb$

Step2: Set up Punnett Square

	$B$	$B$
$b$	$Bb$	$Bb$

Step3: Identify genotypes/phenotypes

All offspring have genotype $Bb$. Phenotype is black fur (dominant trait expressed).

Step4: Calculate percentage chance

100% of offspring have the same genotype/phenotype.

Problem 4 (Sunflowers)

Step1: Assign allele symbols

Let $T$ = dominant tall stem allele, $t$ = recessive short stem allele.
Parent 1 (homozygous dominant): $TT$; Parent 2 (homozygous recessive): $tt$

Step2: Set up Punnett Square

	$T$	$T$
$t$	$Tt$	$Tt$

Step3: Identify genotypes/phenotypes

All offspring have genotype $Tt$. Phenotype is tall stems (dominant trait expressed).

Step4: Calculate percentage chance

100% of offspring have the same genotype/phenotype.

Answer:

Problem 3 (Rabbits)

Punnett Square:

	$B$	$B$
$b$	$Bb$	$Bb$

Genotypes	$Bb$
Percentage Chance	100%

Problem 4 (Sunflowers)

Punnett Square:

	$T$	$T$
$t$	$Tt$	$Tt$

Genotypes	$Tt$
Percentage Chance	100%