D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is...
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Transcript of D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is...
![Page 1: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/1.jpg)
D.N.AIn humans, the allele for
dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children. Which of these if the predicted ratio of the children with dimples to the children without dimples?
D
d
D
D
DD DD
Dd Dd
a.1:0b.1:1c.1:3d.3:1
![Page 2: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/2.jpg)
IN ORDER TO DETERMINE WHETHER A DISEASE OR TRAIT WILL BE PASSED TO FAMILY MEMBERS, A PEDIGREE IS CREATED
PEDIGREE
![Page 3: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/3.jpg)
A PEDIGREE CHART Is a map of a family’s genotypes It can be used to trace a disease or interesting
trait through a family
![Page 4: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/4.jpg)
A square represents a male
A circle represents a female
![Page 5: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/5.jpg)
If it is filled in, means the male or female has a trait
Effected Female Effected Male
![Page 6: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/6.jpg)
Uneffected male
Uneffected female
If it is unfilled in, means the male or does not express the trait or is
homozygous recessive
![Page 7: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/7.jpg)
A horizontal line between a circle and a square means that they are married
![Page 8: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/8.jpg)
If there is a line coming down from the connected couple, it
means they have children
![Page 9: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/9.jpg)
HOW MANY MALES ARE THERE IN THE FAMILY?HOW MANY FEMALES ARE THERE IN THE FAMILY?HOW MANY PEOPLE IN THE WHOSE FAMILY HAVE THE DISEASE?WHAT IS THE SEX OF THE PARENT WHO HAS THE DISEASE?
67
4
Female
![Page 10: D.N.A In humans, the allele for dimples (D) is dominant. The allele for not having dimples (d) is recessive. A woman (DD) and a man (Dd) have four children.](https://reader035.fdocuments.in/reader035/viewer/2022062314/56649f165503460f94c2cd69/html5/thumbnails/10.jpg)
IN HUMANS, THE ALLELE FOR HAVING FEET WITH NORMAL ARCHES IS DOMINANT (A). THE ALLELE FOR FLAT FEET IS RECESSIVE (A). THE PEDIGREE BELLOW SHOWS THE OCCURRENCE OF NORMAL ARCHES AND FLAT FEET IN FOUR GENERATIONS OF A FAMILY. IN THE PEDIGREE, INDIVIDUALS ARE IDENTIFIED BY THE GENERATION AND INDIVIDUAL NUMBERS.