If both parents are albino, all the offspring shall be

Options

A. albino
B. some albino, some normal
C. homozygous normal
D. heterozygous normal

Answer

To solve the question "If both parents are albino, all the offspring shall be," we need to understand the genetics of albinism. Here’s a step-by-step solution:

### Step 1: Understand Albinism
Albinism is a genetic condition characterized by the absence of melanin, which is caused by a mutation in the gene responsible for producing the enzyme tyrosinase. This condition is inherited in an autosomal recessive manner.

**Hint:** Albinism is a recessive trait, meaning that an individual must inherit two copies of the recessive allele to express the condition.

### Step 2: Determine the Genotype of Albino Parents
Since albinism is a recessive trait, individuals with albinism have the genotype "aa" (homozygous recessive). Therefore, if both parents are albino, their genotypes will be:
- Parent 1: aa
- Parent 2: aa

**Hint:** Remember that both parents being albino means they both carry the homozygous recessive genotype.

### Step 3: Predict the Offspring's Genotype
When both parents with the genotype "aa" produce offspring, the only possible combination of alleles for the offspring will also be "aa." This means all offspring will inherit the recessive allele from both parents.

**Hint:** Use a Punnett square to visualize the inheritance pattern. In this case, all squares will show "aa."

### Step 4: Conclusion
Since all offspring will have the genotype "aa," they will all express the albino phenotype. Therefore, the answer to the question is that all the offspring shall be albino.

**Hint:** The presence of two recessive alleles (aa) in the offspring guarantees that they will exhibit the albino trait.

### Final Answer
All the offspring shall be albino.