Which of the following scientists was involved with organic evolution?
Mendel
Larmarck
Morgan
Pasteur
Correct answer is B
No explanation has been provided for this answer.
The genotypic ratio of 1 : 2 : 1 in the offspring of a hybrid cross illustrates the law of
use and disuse
dominance
segregation
linkage
Correct answer is C
No explanation has been provided for this answer.
Which of the following statements about sex determination is correct? At fertility
the probability of male to female offspring is 1/2
the Y chromosome of the father decreases the probability of having a male child to 3/4
the xx chromosome of the mother decreases the probability of having a female child to 3/4
the vigour of either parents determines the sex of the offspring
Correct answer is A
No explanation has been provided for this answer.
Which of the following statements is correct about variation?
Offsprings are different from their parents only
Offsprings from the same parents look alike
Offsprings differ from their ancestors but look like their immediate parents
offsprings differ from their ancestors and from each other
Correct answer is D
No explanation has been provided for this answer.
The major types of man’s finger prints do not include
arch
compound
simple
loop
Correct answer is C
No explanation has been provided for this answer.