Reyana09
Famed Member
Joined: Nov 16, 2021
Last seen: Dec 29, 2021
Last seen: Dec 29, 2021
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Answer to: From a cross AABb x aaBb, the genotypes AaBB : AaBb : Aabb will be obtained in the ratio
Correct answer: (b) 1 : 2 : 1
4 years ago
Answer to: When ‘Aa’ is crossed with ‘aa’, (A is dominant over a) (a) all the offspring will have dominant phenotype.
Correct answer: (c) 50% of offspring will have dominant phenotype and 50% will have recessive phenotype.
4 years ago
Answer to: Distance between the genes and percentage of reconciliation shows
Correct answer: (a) a direct relationship
4 years ago
Answer to: Conditions of a karyotype 2n + 1 and 2n + 2 are called
Correct answer: (a) aneuploidy
4 years ago
Answer to: All genes located on the same chromosome
Correct answer: (b) form one linkage group
4 years ago
Answer to: Females with Turner’s syndrome have (a) small uterus (b) rudimentary ovaries
Correct answer: (d) all of these
4 years ago
Answer to: This abnormality occurs due to monosomy (2n - 1); the individual has 2n = 45 chromosomes with 44 + XO genotype.
Correct answer: (c) Turner’s syndrome
4 years ago
Answer to: Klinefelter’s syndrome is characterised by a karyotype of
Correct answer: (d) XXY
4 years ago
Answer to: Mongolism is a genetic disorder which is caused by the presence of an extra chromosome number
Correct answer: (b) 21
4 years ago
Answer to: Trisomy is represented by (a) (2n – 1) (b) (2n – 2) (c) (2n + 2) (d) (2n + 1)
Correct answer: (d) (2n + 1)
4 years ago
Answer to: Failure of segregation of chromatids during cell division results in the gain or loss of chromosomes, this is called as
Correct answer: (c) aneuploidy
4 years ago
Answer to: Which of the following trait is controlled by dominant autosomal genes?
Correct answer: (d) All of these
4 years ago
Answer to: Select the disease which is caused by recessive autosomal genes when present in homozygous conditions.
Correct answer: (d) All of these
4 years ago
Answer to: In XO type of sex determination (a) females produce two different types of gametes
Correct answer: (b) males produce two different types of gametes
4 years ago
Answer to: Grasshopper is an example of XO type of sex determination in which the males have
Correct answer: (a) one X chromosome
4 years ago
Answer to: XO type of sex determination and XY type of sex determination are the examples of
Correct answer: (a) male heterogamety
4 years ago
Answer to: Which of the following are reasons for Mendel’s success? (i) Usage of pure lines or pure breeding varieties (ii) Consideration of one character at a time
Correct answer: (b) (i), (ii) and (iii)
4 years ago
Answer to: If linkage was known at the time of Mendel then which of the following laws, he would not have been able to explain?
Correct answer: (b) Law of independent assortment
4 years ago