ONE WORD ANSWER. PLEASE DO ALL OTHERWISE PASS ON. THANK YOU! 1. What does not oc
ID: 3524418 • Letter: O
Question
ONE WORD ANSWER. PLEASE DO ALL OTHERWISE PASS ON. THANK YOU!
1. What does not occur at the placenta?
2. The sperm’s acrosome contains?
3. During which stage of parturition the cervix initially dilates?
4. In which of the following structures do sperm cells mature and complete their development?
5. how many autosomes are normally found in a body cell?
6. which of the following is considered to be an accessory gland of the male reproductive system?
7. Turner syndrome is due to a?
8. Which structure does not contribute directly to the production of seminal fluid?
9. and x-linked Gene inherited by a male comes from the?
10. Which gland produces the gonadoTropic hormones?
11. female birth control pills probably act by inhibiting production of which hormones?
12. when a mature follicle releases an egg and becomes a?
13. LH stimulates the?
14. A family has seven sons. The chance that there are child will be a daughter is?
15. Down syndrome is most often due to an extra?
Explanation / Answer
1. There is no intermingling of mother and foetal blood in placenta.
2. The sperm's acrosome contains hyaluronidase and proteolytic enzymes.
3.During the active phase of Effacement or dilation stage, the cervix dilates.
4. Sperm cell matures and develops in epididymis.
5. 44 autosomes are present in human body cell.
6. The accessory glands are : seminal vesicles, prostate glands and bulbourethral gland.
7. Turner syndrome is due to a presence of only one X chromosome.
8. The accessory gland does not contribute directly.
9. Male have only one X chromosome which comes from allele provided by parent and mutation in it causes X- linked recessive trait inheritence.
10. Hypothalamus produces gonadotropic hormone.
11. Luteinizing hormone or LH and follicle stimulating hormone or FSH.
12. After releasing egg it becomes corpus luteum.
13. In females, an acute rise of LH triggers ovulation and development of corpus luteum. In males where it is also called as interstitial cell stimulating hormone it stimulates leydig cell production of testosterone.
14. Since the probability of each child being a boy is 1/2 so the probability for a girl child will be :
(1/2) x (1/2) x (1/2) x (1/2) x (1/2) x (1/2) x (1/2) = 1/128
15. It is due to an extra copy of chromosome 21 ( 3 instead of 2 copies).
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