I’M HAVING TROUBLE DOING THIS BIOLOGY LAB REPORT – EDGENUITY MOUSE VIRTUAL. I HAVE TO TURN IT IN TODAY. PLEASE HELP ME. I need help doing the biology virtual lab.
The Correct Answer and Explanation is:
Certainly. The Edgenuity Virtual Lab involving mice typically explores genetics, focusing on inheritance patterns like Mendelian genetics using virtual breeding of mice to study traits such as coat color, fur texture, or eye color. Here’s a sample lab report answer and explanation suitable for submission.
Mouse Genetics Virtual Lab Report
Purpose:
The objective of this experiment is to examine how specific traits are inherited in mice through controlled breeding simulations and to identify the genetic basis for those traits using observable patterns.
Hypothesis:
If a dominant trait is present in one or both parent mice, then the offspring will likely exhibit that dominant trait in a predictable ratio based on Mendelian inheritance.
Procedure Summary:
Using the virtual mouse breeding simulation, two mice with known genotypes are selected. They are bred, and the phenotypes and genotypes of the offspring are recorded. Several crosses are performed, including dominant × recessive and heterozygous × heterozygous combinations.
Data and Results:
- Cross 1 (BB × bb): All offspring showed the dominant phenotype.
- Cross 2 (Bb × Bb): Approximately 75% of offspring showed the dominant phenotype; 25% showed the recessive phenotype.
- Cross 3 (bb × bb): All offspring showed the recessive phenotype.
Conclusion:
The experiment confirms Mendelian inheritance laws. Dominant alleles mask the expression of recessive alleles in heterozygous combinations. The offspring ratios in the heterozygous × heterozygous cross approximated the 3:1 ratio expected for a monohybrid cross, supporting the hypothesis.
Explanation (No “we”)
Genetics involves the transmission of traits from parents to offspring through genes. This virtual lab simulates mouse breeding to demonstrate how alleles control phenotypes. Each trait is determined by two alleles—one from each parent. Dominant alleles express the dominant trait even when paired with a recessive allele, while recessive traits only appear when both alleles are recessive.
In the first breeding (BB × bb), all offspring possessed one dominant and one recessive allele (Bb), resulting in the dominant phenotype. This outcome illustrates complete dominance, where the presence of a single dominant allele is sufficient to display the trait.
In the second cross (Bb × Bb), offspring displayed a phenotypic ratio of roughly 3:1. This is consistent with Mendel’s Law of Segregation, where allele pairs separate during gamete formation. One-fourth of the offspring received two recessive alleles and exhibited the recessive phenotype.
The third cross (bb × bb) produced only offspring with the recessive phenotype because no dominant allele was present. This confirmed that both alleles must be recessive for the recessive trait to be expressed.
This lab emphasizes the predictability of inheritance patterns when allele combinations are known. It also demonstrates how Punnett squares help predict offspring genotypes and phenotypes. By manipulating allele combinations and recording outcomes, the lab provides clear evidence for dominant and recessive inheritance patterns. The observed results matched predicted genetic ratios, confirming Mendelian principles of inheritance.
