Multiple Choice
Which of the following genotypes will express a dominant phenotype?
296
views
13. Mendelian Genetics
Genotype vs. Phenotype
Struggling with General Biology?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following genotypes is homozygous?
A
Aa
B
AA
C
aA
D
aa
Verified step by step guidance1
Understand the concept of homozygosity: A genotype is homozygous when both alleles for a particular gene are the same. This can be either dominant (e.g., 'AA') or recessive (e.g., 'aa').
Identify the alleles in each genotype: In the given options, 'Aa', 'AA', 'aA', and 'aa', each letter represents an allele.
Analyze each genotype: Check if the alleles in each genotype are the same or different.
For 'Aa' and 'aA', notice that the alleles are different ('A' and 'a'), indicating heterozygosity.
For 'AA' and 'aa', observe that the alleles are the same ('A' and 'A' for 'AA', 'a' and 'a' for 'aa'), indicating homozygosity.
3:39mWatch next
Master Dominant vs. Recessive Alleles with a bite sized video explanation from Jason
Start learningRelated Videos
Related Practice
Genotype vs. Phenotype practice set
Problem sets built by lead tutorsExpert video explanations