Multiple Choice
What is the best way to identify the external phenotype of an animal?
331
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
An individual who expresses a recessive phenotype must have what genotype?
A
Hemizygous
B
Homozygous recessive
C
Homozygous dominant
D
Heterozygous
Verified step by step guidance1
Understand that a recessive phenotype is only expressed when an individual has two copies of the recessive allele.
Recall that alleles are different forms of a gene, and each individual inherits two alleles for each gene, one from each parent.
Recognize that the term 'homozygous' means having two identical alleles for a particular gene.
Identify that 'homozygous recessive' refers to having two recessive alleles, which is necessary to express a recessive phenotype.
Conclude that an individual expressing a recessive phenotype must have a homozygous recessive genotype, as the presence of a dominant allele would mask the recessive trait.
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