#Question id: 5686
#Unit 5. Developmental Biology
Following statements are regarding to double fertilization in angiosperms.
A. One sperm cell fuses with the egg cell to produce the zygote that will develop into the new embryonic plant.
B. The second sperm cell fuses with the usually binucleate central cell, giving rise to the
endosperm, the tissue that nourishes the developing embryo. This second event is not “true” fertilization in the sense of male and female gametes undergoing fusion.
C. The second sperm cell fuses with the usually binucleate central cell, giving rise to the
endosperm, the tissue that nourishes the developing embryo. This second event is “true” fertilization in the sense of male and female gametes undergoing fusion.
D. During fertilization in angiosperm, when the sperm cells are released, the egg undergoes a flux of Ca2+. Then, chemicals released from the egg appear to make the sperm competent for cell fusion.
Which of the following statements are true?
#Question id: 5687
#Unit 8. Inheritance Biology
The error in meiosis that produces a 47,XYY karyotype is best described by
#Question id: 5688
#Unit 8. Inheritance Biology
Which of the following are not cause of aneuploidy
#Question id: 5689
#Unit 8. Inheritance Biology
What kind of aneuploidy gamete will be generated if meiotic nondisjuction in second division (n represent haploid number of chromosome )
#Question id: 5690
#Unit 8. Inheritance Biology
Species I is diploid (2n =4) with chromosomes AABB; related species II is diploid (2n = 6) with chromosomes MMNNOO .Which of the following chromosome in allotriploid individuals?
#Question id: 5691
#Unit 8. Inheritance Biology
Which of the following most accurately explains the cause for the abnormal numbers of chromosomes during human reproduction that can result in Down syndrome, Turner’s syndrome, or Klinefelter’s syndrome?