QUESTION 7 All of the following combinations are possible in the gametes of an o

Question

QUESTION 7 All of the following combinations are possible in the gametes of an organism that is AaBb EXCEPT: O Ab. AB. O ab. QUESTION 8 A child is bom with dwarfism (t), His parents are of normal height. Which of the following must be true of the parents? O They are both heterozygous tall. O They are both heterozygous dwarf. O They are both homozygous dominant tall. O They are both homozygous recessive dwarf. QUESTION 9 According to the law of segregation 0 O O O the sex chromosomes of males and females differ. there is an independent assortment of nonhomologous chromosomes during meiosis. pairs of alleles fuse during the formation of gametes. pairs of alleles separate during the formation of gametes. each individual carries a single copy of each "factor." QUESTION 10 What are the possible genotypes in a gamete of an organism that is HhTt if the two genes are located on separate chromosomes and therefore not linked? QUESTION 11 The failure of chromosomes to segregate properly during meiosis is called O independent assortment. O nondisjunction. O inversion. O replication. O translocation. QUESTION 12 Which of the following statements about genotypes and phenotypes is true? O Individuals with the same genotype might have different phenotypes. O Matings between individuals with recessive phenotypes produce offspring with dominant phenotypes. O Individuals with the same phenotype might have different genotypes O Matings between individuals with dominant phenotypes cannot produce offspring with recessive phenotypes.

Explanation / Answer

7) aa combination is not possible, Only AB, Ab,aB, ab are possible

8) Bothe the parents are heterozygous tall. Tt * Tt (Both the parents)

Gamates possible are TT (normal), Tt (heterozygous normal) Tt (hyterozygous narmal) tt (homozygous effected)

9) Pairs of alleles separate during the formation of the gametes

10) Possible genotype gametes for HhTt.

HT, Ht, hT, ht these are the foru possible genotypes

11) the failur of chromosome segregation during meiosis is called nondisjunction.

12) Option 1 and 3 are correct (Individuals with same genotype can have different phenotypes and vice versa)

Option 4 is also correct Matings between individuals with dominant phenotype can not produce offsprings with recessive phenotype.

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