A girl with curly hair and dimples but no freckles has a brother with curly hair and freckles but no dimples. She wanted to figure out the possible genotype for herself and her brother related to these characteristics. She did some research and determined which expression of the traits was dominant and which was recessive. She recorded the information in a chart. If the two children have the same biological parents, what is one of the possible genotypes of each child for these three traits based on their descriptions? Sister Brother
Question
A girl with curly hair and dimples but no freckles has a brother with curly hair and freckles but no dimples. She wanted to figure out the possible genotype for herself and her brother related to these characteristics. She did some research and determined which expression of the traits was dominant and which was recessive. She recorded the information in a chart. If the two children have the same biological parents, what is one of the possible genotypes of each child for these three traits based on their descriptions? Sister Brother
Solution
To answer this question, we first need to understand the basic principles of genetics. In genetics, traits are determined by genes, which come in pairs. One gene in each pair comes from the mother, and the other from the father. Each gene in a pair can be either dominant or recessive. A dominant gene will always express itself if it is present, while a recessive gene will only express itself if both genes in the pair are recessive.
In this case, we have three traits: curly hair, dimples, and freckles. Let's assume that curly hair and dimples are dominant traits, and freckles are a recessive trait. This is just an assumption, as the question does not provide this information.
The girl has curly hair and dimples, but no freckles. This means she must have at least one dominant gene for curly hair and one for dimples. Since she does not have freckles, she must have two recessive genes for this trait. So, one possible genotype for the girl could be: Curly hair (CC or Cc), Dimples (DD or Dd), No freckles (ff).
The boy has curly hair and freckles, but no dimples. This means he must have at least one dominant gene for curly hair, and two recessive genes for dimples. Since he has freckles, he must have at least one dominant gene for this trait. So, one possible genotype for the boy could be: Curly hair (CC or Cc), No dimples (dd), Freckles (FF or Ff).
Remember, these are just possible genotypes. The actual genotypes could be different depending on the specific genes the parents carry.
Similar Questions
Assume that a recessive allele (f) is associated with a severe language disorder. An unaffected male wants to determine the genotypes of his wife, his parents, and himself. His mother has the language disorder. Neither he nor his wife has the language disorder, but one of their five children does. What is the genotype for each individual? Answers may be used more than once or not at all. (Note: the gene associated with this language disorder is on an autosome.)Mother Father Wife Himself
10.A man and a woman both have freckles, which is a dominant trait. They have two children- one has freckles and one does not. What are the alleles of the parents?It is impossible to tellFf and FfFF and Ffff and Ff
A human baby boy inherits a recessive allele from his mother. In which circumstance would he most likely show the trait coded for by the recessive allele? Group of answer choicesThe allele is on the X chromosome.The baby inherits the dominant allele from his father.The allele is on an autosomal chromosome and the baby is a twin.The allele is on the Y chromosome.
A pedigree diagram shows males and females affected equally, affected children can have unaffected parents, and heterozygotes have a normal phenotype. This is a(n) _____.Group of answer choicesautosomal recessive disorderautosomal dominant disordersex-linked disordermitochondrial disorderNext
Hair texture is an incomplete dominant trait. Curly hair (HH) and straight hair (H'H') make wavy hair (HH'). Cross a wavy and a straight haired parent and list the phenotypic ratio of the offspring.Phenotypic ratio is: Wavy Straight
Upgrade your grade with Knowee
Get personalized homework help. Review tough concepts in more detail, or go deeper into your topic by exploring other relevant questions.