SEX RATIO OF REPTILE HATCHLINO Turtles Green 2 05 Crocodilians 9 10 11 12 20 40
ID: 269378 • Letter: S
Question
SEX RATIO OF REPTILE HATCHLINO Turtles Green 2 05 Crocodilians 9 10 11 12 20 40 13 14 15 16 17 18 Egg Incubation Temperature C) 18. The graph above represents the proportions of hatchlings of certain types of reptiles that are male at different egg incubation temperatures Which of the following claims is best supported by the data? 19 20 21 22 XX Y 17. The diagram above depicts a karyotype of an individual human. Which of the following statements concerning the karyotype in the diagram is true? (A) The diagram illustrates a genetic condition (A) The expression of sex-determination genes in (B) Green turtle eggs do not hatch at (C) In reptiles, sex determination is influenced by (D) Incubating lizard eggs at constant low certain reptiles is influenced by temperature. temperatures above 35 C the sex ratio of the existing population. temperatures produces a large proportion found in females. (B) The diagram indicates a mechanism for increasing genetic diversity in of males. subsequent generations nondisjunction during gamete formation a genetic condition. (C) The diagram illustrates the results of (D) The diagram indicates Down syndrome,Explanation / Answer
Please find the answers below:
Answer 17: Choice C (The karyotype demonstrates a normal pair of chromosome 21 hence no Down's syndrome. Here, presence of an extra X-chromosome depicts non-disjunctioning during either oogenesis or spermatogenesis in the parents leading to 23rd trisomy)
Answer 18: Choice B (As it can be clearly seen from the graphical data, lower temperature below 35 degree celcius prevent hatching of eggs in turtles, lower temperature being favoured for hatching)
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