Multiple Choice
The diploid phase of the human life cycle begins with _____.
3
views
2. Mendel's Laws of Inheritance
Mendel's Experiments and Laws
Struggling with Genetics?
Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
In a cross between a pea plant with yellow seeds (dominant) and a pea plant with green seeds (recessive), all offspring in the F1 generation have yellow seeds. What does this result indicate about the genotype of the male parent?
A
Cannot be determined from the information given
B
Heterozygous (Yy)
C
Homozygous dominant (YY)
D
Homozygous recessive (yy)
Verified step by step guidance1
Identify the alleles involved: yellow seed color (Y) is dominant, and green seed color (y) is recessive.
Note that the female parent has yellow seeds, but the problem focuses on the genotype of the male parent.
Since all F1 offspring have yellow seeds, this means every offspring received at least one dominant allele (Y).
If the male parent were heterozygous (Yy), some offspring could inherit the recessive allele (y) from him and the recessive allele (y) from the female parent, producing green seeds, which is not observed.
Therefore, the male parent must be homozygous dominant (YY) to ensure all offspring have yellow seeds.
Related Videos
Related Practice
Mendel's Experiments and Laws practice set
Problem sets built by lead tutorsExpert video explanations