Telegram group: T.me/BBCNOUN ====== BIO201 ====== 1. A phenomenon in which a portion of one chromosome is transferred to another chromosome is known as __. crossing over deletion --->> translocation all of the options 2. The genetic materials within the chromosome is _____ --->> DNA chromosomes chromatin ribosomes 3. If the genes for a trait occur in both sexes, but the expression of the trait is different in the sexes, the trait is said to be __. sex link sex control sex determine --->> sex influnce 4. The number of alleles controlling albinism is __. --->> 2 3 4 6 5. __________is the phenomenon wherein the effect of one gene (locus) is dependent on the presence of one or more 'modifier genes' --->> Epistasis Homeostasis Epigenesis Hypogenesis 6. In any cross between two heterozygotes for one locus all genotypes occur in a fraction of 1 --->> ¼ ½ ¾ 7. Who observed that in certain insects, the nuclei of half of the sperm contain an extra structure? Lamark --->> Hermann Henking Weisman Mendel 8. The sex which produces only one type of gamete is described as the ____ monogametic digametic heterogametic --->> homogametic 9. Which of the following is an example of sex-influenced trait? Haemophilia Blood group --->> Baldness Hight 10. Any traits present on the Y-chromosome will be transmitted from father to son only, such traits are said to be sex link Mongolia idiocy --->> Holandric polandric