Exam chapter 3

• All the following indicate that the chromosomes carry the genetic information in human, except that ……..

• The karyotype of the human male differs from that of the female in……

• The following figures show two karyotypes for a living organism that resembles the human in sex determination, study them, then answer :
• The two statements that are applied to the previous two figures are ……………
• CHOOSE TWO ANSWERS

• …………..of genes controls the inheritance of flower color in the late night plant

• A person with genotype (GgHH), which of the following is correct with respect to the produced gametes ?

• When crossing two pea plants, one of them has hybrid smooth seeds and the other has wrinkled seeds. So, the percentage of smooth seeds in the resulted generation is ..

• If the genotype of a person is (BBRr), all the resulted gametes always carry

• The percentage of children that carry blood group (AB) resulted from the marriage of a man whose blood group caries antigens (A) and (B) to a woman whose blood group doesn’t carry antigens (A) and (B) is …….

• Which of the following blood groups have antigen (B) ?

• The genes of root system formation in a plant are affected by soil moisture as shown in the opposite graph that illustrates four types of plants (A, B , C & D), which plant is better to irrigate its seedlings by immersion ?

• From the properties of blood group (B) is that

• Which of the following genotypes represents a sterile individual?

• When an ovum (23 +X) is fertilized by a normal sperm containing chromosome (X), …………… is produced

• If a normal sperm fertilized a human female ovum that contains 24 chromosomes including only one sex chromosome that differs from the sex chromosome of the sperm, …………….may appear.

• Which of the following cells contains the least number of chromosomes ?

The opposite figure represents the karyotype of a human sperm, when fertilization occurred to the ovum, the resulted baby was a female suffering from congenital defects in the heart, which of the following represents the karyotype of the fertilized ovum ?

• the trait which its appearance is affected by the sex hormones in animals is

• When a bald-headed man married to a normal hair woman, whereas both of them are hybrid, what is the ratio of the emergence of baldness in the offspring (males only) ?

• A healthy young man marries a girl who carries the hemophilia gene, the probability of the appearance of females with hemophilia is

• Which of the following agrees with the inheritance of the milk production trait ?

• • When fertilizing an ovum that doesn’t carry the colour blindness gene with a sperm carrying the colour blindness gene :
  • Is the embryo male or female ? And why ?

• When fertilizing an ovum that doesn’t carry the colour blindness gene with a sperm carrying the colour blindness gene :
• Is the embryo normal or infected ? And why ?

• The following table illustrates the gametes combination, where symbol (h) represents the haemophilia gene :
• Record the results of gametes combination in the table

• The following table illustrates the gametes combination, where symbol (h) represents the haemophilia gene :
• Record the case of everybody in the table

• Mention a similarity between colour blindness and baldness case