Name PEDIGREES ACTIVITY Hints for analyzing pedigrees: 1) If the individual is h
ID: 173525 • Letter: N
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Name PEDIGREES ACTIVITY Hints for analyzing pedigrees: 1) If the individual is homozygous recessive, then both parents MUST have at least one recessive allele (parents are heterozygous or homozygous recessive). 2) If an individual shows the dominant trait, then at least one of the parents MUST have the dominant phenotype. 3) If both parents are homozygous recessive, then ALL offspring will be homozygous recessive. Human Pedigrees For Questions 1-9, use the pedigree chart shown below. Some of the labels may be used more than once. A male 1. 2. A female 3. A marriage 4. A person who expresses the trait 5. A person who does not express the trait 6. A connection between parents and offspring 7. How many generations are shown on this chart? white hair on the forehead. 8, What is the most likely genotype of individual "A"? (FF. Ffor ff?) 9. What is the most likely genotype of individual "C" (FF, Ffor ff?)Explanation / Answer
Karyotype practice-
1. a Female
1. b One of the X chromosome is missing (also called Turner's syndrome.
Turner syndrome results from a missing or incomplete sex chromosome.
Symptoms include short stature, delayed puberty, infertility, heart defects and certain learning disabilities)
2. a Male
2. b There are three numbers of 21st chromosome rather than two. This is also called Down's syndrome.It is associated with physical growth delays, characteristic facial features and mild to moderate intellectual disability
Question paper starting with the question on pea plant
1. d) 75% (The cross will yield 1 homozygous round, 2 heterozygous round and 1 wrinkled)
2. b) Gg X gg (This will produce Gg ang gg in close to 50% ratio)
3. b) 2GG, 2Gg, 0gg (As the cross ratio is GG:Gg- 1:1)
4. c) Anaphase I and II (Chromosomal segregation occurs)
5. b) RT, rT (gametes formed from RrTT genotype)
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