In Thomas Hunt Morgan's experiments, the ratio of red-eyed flies to white-eyed flies appeared to follow a simple Mendelian pattern of inheritance. What observation(s) did he make that led to his conclusion that the white-eyed trait was actually not a simple Mendelian trait?
A. He was able to correlate the expression of white eyes to the inheritance of an X chromosome.
B. He saw that only males had white eyes.
C. He observed that the white-eyed trait was recessive.
D. He was able to correlate the expression of white eyes to the inheritance of a Y chromosome because only F2 males had white eyes and the trait is recessive.
E. He was able to correlate the expression of white eyes to the inheritance of an X chromosome because only F2 males had white eyes and the trait is recessive.
E. He was able to correlate the expression of white eyes to the inheritance of an X chromosome because only F2 males had white eyes and the trait is recessive.
You might also like to view...
Once the histones are removed from a chromosome in cellular division, one can see DNA spreading out in loops around the supporting protein structure, called the:
A. scaffold. B. 1400-nm chromatin fiber. C. 300-nm chromatin fiber. D. 2-nm chromatin fiber. E. beads on a string.
The birth control pill is a mixture of ________ that prevent the maturation of the oocyte
a. progesterone and estrogen b. estrogen and luteinizing hormone c. estrogen and follicular stimulating hormone d. progesterone and testosterone e. testosterone and growth hormone
The first child conceived using IVF was born
in
a. 1958. b. 1968. c. 1978. d. 1988. e. 1998
Calcitonin
What will be an ideal response?