Five two-point crosses involving the four linked genes A, B, C, and D were performed in yeast with the following results:
AB × ab: 41% AB 39% ab 9% Ab 11% aB
AC × ac: 45% AC 48% ac 4% Ac 4% aC
BC × bc: 44% BC 44% bc 6% Bc 6% bC
AD × ad: 48% AD 46% ad 3% Ad 3% aD
BD × bd: 37% BD 37% bd 12% bD 13% Bd
Which is the best map for these four genes?
A. B 6mu A 4mu C 3mu D
B. B 12mu C 8mu A 6mu D
C. D 3mu A 4mu C 6mu B
D. A 4mu C 6mu B 12mu D
E. The data suggest that the genes are not linked.
C
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When the sperm fuses with an egg cell, __________ has occurred.
a. meiosis; fertilization b. fertilization; meiosis c. sexual selection; meiosis d. fertilization; mutation
An "S" shaped curve is characteristic of logistic population growth
Indicate whether the statement is true or false.
Which of the following parameters could affect
the shape of a protein?
a. heat b. low pH c. detergents d. high pH e. all of these
In image "B" individuals within the population defend distinct territories for resources, resulting in a defined distance between each. This is an example of distribution.
Three population distribution patterns are shown in this figure.
A. random
B. nonselected
C. clumped
D. forced
E. uniform