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Is a widows peak dominant or recessive?
A widow's peak is a dominant trait. This means that if one parent has a widow's peak, there is a higher likelihood that their offspring will also inherit this trait. If both parents have a widow's peak, the offspring will most likely have one as well.
A widows peak is a humans trait that is controlled by?
A widow's peak is a V-shaped point of hair at the front of the head, and it is controlled by genetics. It is inherited as a dominant trait, meaning one copy of the gene from either parent can result in a widow's peak.
What does it mean that an organism is homozygous dominant for a trait?
Homozygous Dominant for a trait means that an organism has two dominant alleles for that trait. Here's an example: Trait: Widow's Peak Widow's Peak allele: Dominant (D) No widow's peak allele: Reccessive(d) Homozygous Dominant (DD) Homozygous Reccessive (dd) Heterozygous (Dd)
If AA is dominant for a widow's peak and if a child is born without a widow's peak what is his phenotype?
The Phenotype would be a straight hairline. The genotype would be aa.
If the mother is heterozygous for a trait like widows peak what are the chances that the eggs she produces will have the gene for a widows peak?
Half her eggs will have the widow's peak gene, and the other half will have the other allele, so it's 50%.
Is a widows peak dominant or recessive?
A widow's peak is a dominant trait. This means that if one parent has a widow's peak, there is a higher likelihood that their offspring will also inherit this trait. If both parents have a widow's peak, the offspring will most likely have one as well.
How can two parents with a dominant trait like a widow's peak have a child with a recessive straight hairline?
Yes, because they can carry the trait from their parents. You would need to look at the grandparents on both sides. If one grandparent on the maternal and one on paternal side had a widows peak then the parents could both be a carrier to the widow peak gene (wW), meaning they could produce a child with a widows peak. However, if both the maternal and or paternal grandparents lack a widows peak then it is impossible for a grandchild to have a widows peak because both parents would be recessive ww (straight hairline). When attempting to figure out genetics it is best to observe three generations for family genetic traits. However, when in doubt you should confirm with a paternity test.
Is a widows peak a trait controlled by many genes?
A widows peak is controlled by one gene that is passed on from both parents. In this case lets say your parents both have a dominant allele for a widows peak(A) so in that case, you would have a 100% chance of being born with one.
In humans widows peak w is dominant over straight hairline w if a heterozygous male marries a female with a straight hairline what percent of their children can be expected to have a widows peak?
According to Mendelian genetics, if the male is heterozygous for the widows peak trait (Ww) and the female has a straight hairline (ww), 50% of their children are expected to have a widows peak (Ww) and the remaining 50% of their children are expected to have a straight hairline (ww).
What One recessive and one dominate allele?
A dominant allele could be right handedness, or a straight hairline. A recessive allele could be freckles, a widows peak, clef chin, or left handedness.
A widows peak is a humans trait that is controlled by?
A widow's peak is a V-shaped point of hair at the front of the head, and it is controlled by genetics. It is inherited as a dominant trait, meaning one copy of the gene from either parent can result in a widow's peak.
What does it mean that an organism is homozygous dominant for a trait?
Homozygous Dominant for a trait means that an organism has two dominant alleles for that trait. Here's an example: Trait: Widow's Peak Widow's Peak allele: Dominant (D) No widow's peak allele: Reccessive(d) Homozygous Dominant (DD) Homozygous Reccessive (dd) Heterozygous (Dd)
What Nationality of people has a dominant gene for widows peak?
Widow's peak hairline is not determined by nationality, but rather by genetics. It is inherited as a dominant trait, so individuals with at least one parent with a widow's peak are more likely to have one themselves. It can be found in people of various nationalities.
How many genes are passed to the offspring for a trait such as a widows peak?
6
If both of your parents have a trait are you guaranteed to also inherit that trait?
No it is most likely but it is not guaranteed. Both of my parents don't have widows peaks yet i have a widows peak.
If AA is dominant for a widow's peak and if a child is born without a widow's peak what is his phenotype?
The Phenotype would be a straight hairline. The genotype would be aa.
Could 2 people with a widows peak have a child with a straight hairline and could 2 people with a straight hairline have a child with a widows peak EXPLAIN?
Yes to the first one, no to the second one. Firstly, widow's peak is caused by a dominant gene while a straight hairline is caused by a recessive gene. Let 'H' be dominant and 'h' be recessive. So for a dominant gene, the trait still will be expressed whether the genotype of the person is homozygous dominant(HH) or heterozygous(Hh). For a recessive gene however, the trait will only be expressed when the genotype of the person is homozygous recessive (hh). So two people with a widow's peak CAN have a child with a stright hairline, provided both of their genotypes are Hh. This is because by crossing their genotypes, they can have a possibility of having child with the genotype HH(widow's peak), Hh(widow's peak), and also hh(straight hairline). The ratio of these three possibilities however, are 1:2:1. So the odds of having a child with a straight hairline in this case is 1:3. If the two people who have widow's peak have the genotype HH or one of them HH and the other Hh, then the possibility of having a child with a straight hairline is 0. This is because by crossing their genotypes together, the genotype of the child will either be HH for the first case, and HH or Hh for the second case. For two people who have a straight hairline, the genotype of both will definitely be homozygous recessive (hh), thus child will definitely have the recessive gene. Therefore, it is not possible for two people with straight hairline to have a child with widow's peak.
