Unnatched ear lobes are dominant over attached ear lobes. You and your sister have attached ear lobes; your parents bouth have unattached ear lobes. What are the genotypes of your parents?
TITLE: Inheritance: Mendel, Genetic Terminology, And Single Trait Crosses
2006-07-02 11:43:41 · 10 answers · asked by starruinstarla 1 in Science & Mathematics ➔ Biology
Both parents have heterogeneous genotypes. Each carries one allele for attached and one allele for unattached earlobes. The dominant allele for the unattached ear lobes masks the attached ear lobe allele, thus the parents have unattached ear lobes. But they have each passed the recessive allele for attached ear lobes to their two children so their children have attached lobes.
2006-07-02 16:36:39 · answer #1 · answered by ellyd1288 2 · 6⤊ 0⤋
the genotype of the parents will be Uu and uu.Where U represents unattached ear lobe and u represents attached ear lobe.Where U is dominant.
2006-07-02 23:27:22 · answer #2 · answered by shubh 2 · 0⤊ 0⤋
RrRr, where R is unattached and r is attached. If each parent passes down the r to their children, the child will have attached ear lobes.
2006-07-02 18:47:31 · answer #3 · answered by theletterQ 2 · 0⤊ 0⤋
Both of your parents are probably carring a gene for unattached ear lobes and a gene for attached earlobes. Everyone has two sets of genes for each trait, one from the father and one for the mother. If you inhereted the attached earlobe gene from both parents and not the attached earlobe gene from either, then your earlobes will be attached.
2006-07-02 18:53:05 · answer #4 · answered by Anonymous · 0⤊ 0⤋
To get a genotype, I need to get a genetic map prepared for each of my parents ... then one of myself to see which genes were carried over (and expressed) from which parent.
2006-07-03 01:37:41 · answer #5 · answered by icehoundxx 6 · 0⤊ 0⤋
Key:U=unattached
u=attached
The mom would have Uu and dad would have uu or vice versa.
Making one hetrozygous and the other homozygous
2006-07-02 23:29:24 · answer #6 · answered by mamas628 1 · 0⤊ 0⤋
uu=attached
Uu=unattached
UU=unattached
your parents have to be Uu because the only way to get attached would be to have 2 recessive alleles
2006-07-02 19:27:37 · answer #7 · answered by need4speed 2 · 0⤊ 0⤋
do you mean genotype...if so, I have no idea what the genetic makeup of my parents is.
if you mean phenotype (which is what it sounds like you want)...I really don't think I can name all the physical characteristics of my parents.
I think I read this question wrong...but you've got some really good answers below...so go with one of those :)
2006-07-02 18:46:24 · answer #8 · answered by Smiley Girl 5 · 0⤊ 0⤋
Both parents are heterozygous for earlobes.
2006-07-02 18:48:56 · answer #9 · answered by Keith P 7 · 0⤊ 0⤋
what the hell r u talkin about
2006-07-02 18:48:16 · answer #10 · answered by EAGLE_ 2 · 0⤊ 0⤋