1. What phrase describes an individual with two dominant alleles? 2. What word r
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Question
1. What phrase describes an individual with two dominant alleles? 2. What word refers to the alleles possessed by an individual? 3. How many autoomes do humans have? 4. An individual will have a widow's peak if the genotype is WW or Ww. Is widow's peak an autosomal dominant or autosomal recessive trait? parents have known genotypes? who has one recessive allele for cystic fibrosis? s. What technigueo e sed to daemine the genei nherianc of f iring whent 6. Cystic fibrosis is an autosomal recessive disease. What word refers to an individual (autosomal dominant)? 8. From whom does a male child inherit color blindness-his mother or his father? 9. What is the genotype of a carrier for hemophilia? 10. How many dominant alleles does someone with AB blood type have? 11. Can a child with AB blood type have a parent with O blood? 12. What is the presence of three chromosomes (instead of two) called, and what human chromosome is most commonly affected in this fashion? 13. What is created whe 14. What technique is used to determine the inheritance pattern of specific traits within n chromosomes are paired by size and shape? a family?Explanation / Answer
1. Homozygous dominant phenotype. like AA genotype
2. alleles possessed by an individual is described by genotype.
3. 22 pairs of autosomes a human has.
4. Autosomal dominant. Since the presence of at least one copy of W is giving widow peak it is dominant. The question does not talk about only males or only females getting widow peak. SO it is autosomal.
5. Pedigree can be used to determine the genetic inheritance if we know the genotype of parents.
6. If an individual carries one copy of recessive allele, he or she is called a Carrier.
7. Huntington disease is autosomal dominant. The individual with recessive genotype will not develope the disease. So it is "hh" genotype.
8. Colour blindness is a sex-linked (X-lined) disease. A male child receives the X chromosome only from his mother and father gives Y. To get the disease the mother must pass on the disease to him
9. Haemophilia is a sex-linked recessive disorder. Genotype of disease = xhxh or xhY.
The genotype of the carrier will be xHxh. a carrier is always a female.
10. AB blood type arises when 2 dominant allele A and B are present together.
11. A child with AB blood group will have received the allele A and B from both parents. Hence a person with O group can't be a parent of the child.
12. The presence of three chromosomes is called Trisomy. Human disease from trisomy is Down syndrome.
13. When chromosomes are paired in size and shape, homologous chromosomes are created.
14. Pedigree is used to determine the inheritance within the family.
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