1) Figure 1 above shows the exchange of genetic material on chromosomes. This process takes place at a) heart b) kidneys c) skin d) ovary 2) The diagram above shows the fertilization between a normal ovum and a sperm with 22 chromosomes. Which of the following may be experienced by the baby that develops from the zygote? a) His eyes are pink b) Inhibition of secondary sex characteristics c) His blood is slow to clot d) His hemoglobin is not efficient enough to carry oxygen 3) A wildebeest is crossed with a cow. It is known that the number of chromosomes in the soma cells of a wildebeest and a cow are 56 and 60 respectively. How many chromosomes are there in the gamete cell of the child as a result of the hybrid? a) 29= b) 30 c) 58 d) 116 4) W, X, Y, and Z above indicate the stages of mitosis. Which of the following shows the correct sequence? a) X, W, Z, Y b) Y, Z, X, W c) W, Z, Y, X d) Z, Y, W, X 5) Which of the following genetic diseases is caused by gene mutation? a) Turner syndrome b) Klinefelter syndrome c) Mongolism d) Hemophilia 6) The chromosome content of a mongoloid female is a) 44 + XX b) 44 + XY c) 45 + XX d) 45 + XY 7) 100 long-winged female bari-bari were crossed with 100 short-winged male bari-bari. The first generation offspring were all found to have long wings. When this bari-bari child crossed with each other, 100 bari-bari were produced in the second generation. Generation these two consist of a) 100% long winged tail b) 100% saki winged tail c) 75% long winged tail d) 75% winged tail 8) Sons inherit the Y chromosome from a) A his father b) B his grandfather c) C is his mother d) D mother and father 9) Figure 4 shows a normal distribution graph for a human trait. The nature of the most may be illustrated by the graph is a) weight b) iris color c) type of fingerprint d) blood group 10) Figure 5 above shows the movement of chromosomes to opposite poles in the cell. The above steps happen during the process a) A mitosis b) B meiosis c) C fertilization d) D move across 11) Which of the following is not true about mutation? a) A Occurs only on chromosomes b) B Rarely occurs c) C Can be caused by exposure to radioactive rays d) D Can cause cancer 12) Hemophilia and color blindness are caused by a) A recessive gene on the X chromosome b) B recessive gene in the Y chromosome c) C is the dominant gene on the X chromosome d) D gene is dominant in the Y chromosome 13) Human blood group is a type of variation a) A is passed down from father to son b) B is passed down from mother to child c) C can be influenced by the environment d) D is controlled by genetic inheritance alone 14) Which of the following is not true about mitosis? a) A Daughter cells have the same number of chromosomes as the parent cell b) B It occurs in animals only c) C It occurs during the growth of the zygote d) D One parent cell produces two daughter cells 15) Which of the following diseases is not caused by gene mutation? a) A Down syndrome b) B Albino c) C Sickle cell anemia d) D Cancer 16) A couple who are not color blind give birth to a color blind son. This means that a) A wife has a recessive gene for color blindness in her somatic cells b) B's wife has two recessive genes for color blindness in her somatic cells c) C husband has a recessive gene for color blindness in his somatic cells d) D's husband has two recessive genes for color blindness in his somatic cells 17) Which of the following statements is not true about mitosis? a) A Mitosis produces two daughter cells b) B Mitosis produces cells for growth c) C Daughter cells resemble parent cells d) D The nucleus divides twice 18) Which of the following traits is influenced by environmental factors? a) A Skin color b) B Blood group c) C Type of thumbprint d) D The ability to roll the tongue 19) Among the following, which are recessive traits that exist in humans? I Polydactyl II Straight hair III Can roll the tongue a) A I only b) B III only c) C I and II only d) D I, II, and III 20) A pure white pea plant is crossed with a hybrid red pea plant. It is known that the red gene is dominant. Found a pea tree produced I 50% are recessive purebreds II 25% red flowers lII all trees with red flowers are hybrids a) A III only b) B I and II only c) C I and III only d) D I, II, and III 21) A high-type bean tree is crossed with a low-type bean tree. Children of the generation first all are tall. This means that I gene for tall trait is dominant II tall bean plants have two dominant genes in their somatic cells III low-type bean plants have one dominant gene in their somatic cells a) A I only b) B III only c) C I and II only d) D I, II, and III 22) Which of the following is the importance of meiosis in a species? I Produce genetic variation II Continuing the offspring III Replace dead cells a) A I only b) B III only c) C I and II only d) D I, II, and III 23) Which of the following is the result of genetic research in agriculture in Malaysia? I Rubber Tree Single Core Tree II Selembu III Tenera palm a) A I only b) B I and II only c) C I and III only d) D I, II, and III 24) Which of the following is a continuous variation found in humans? I Shoulder width II Skin color III Blood group a) A I only b) B III only c) C I and II only d) D I, II, and III 25) which of the following shows the chromosome content of a human ovum? I 22 + X II 22 + Y III 22 + XY a) A I only b) B III only c) C I and II only d) D II and III only 26) Which of the following statements describes cloning? I Is a hybrid of two parents II Trees with good characteristics can be selected as clones III Involves vegetative reproduction a) A I only b) B III only c) C I and II only d) D II and III only 27) Which of the following will determine a person's gender? I Ovum sex chromosome II Sperm sex chromosome III The number of sex chromosomes received a) A I only b) B II only c) C I and II only d) D II and III only

HEREDITARY AND VARIATION

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