In a male heterozygote, the maternal allele is imprinted by methylation. Which of the following is true?
◦ Half of his sperm will carry the methylated maternal allele, and the other half will carry the unmethylated paternal allele.
◦ All of his sperm will carry methylated alleles, either the maternal one or the paternal one.
◦ His sperm will be of four types in equal amounts: methylated paternal, methylated maternal, unmethylated paternal, and unmethylated maternal.
◦ All of his sperm will carry the unmethylated paternal allele.
◦ All of his sperm will carry unmethylated alleles, either the maternal one or the paternal one.
true story
The male reproductive system
Neural Circuits and Maternal Behavior
The female and male urinary systems.