The sex ratio
A. is typically 1:1 in species where both parents support the raising of young.
B. is often dominated by males.
C. is never greater than 1 female to 1 male.
D. All of these conditions are true.
A. is typically 1:1 in species where both parents support the raising of young.
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In Hodags (mythical creatures of Wisconsin), brown fur (B) is dominant over gray fur (b) and long horns (H) are dominant over short horns (h). Two true-breeding hodags, one with brown fur and long horns and the other with gray fur and short horns mate and produce an F1. Two F1 individuals are mated. What proportion of the offspring will exhibit a phenotypic combination that is different from the
P generation? Assume the genes for fur color and horn length are on different chromosomes. A. 1/2 B. 9/16 C. 3/16 D. 6/16 E. 1/16
The relationship between specific bacteria and specific diseases was first demonstrated by Koch.
Answer the following statement true (T) or false (F)
In this cross-section of a typical plant leaf, the are where photosynthesis takes place
A. stomata
B. mesophyll cells
C. air spaces
D. stromata
E. outer epidermis cells
If two genes are homologous, then it can be said that they are
A. derived from different ancestral genes and have different functions. B. derived from different ancestral genes but have a similar function. C. related through environmental natural selection. D. found only outside the nucleus in the mitochondrion or chloroplast. E. derived from the same ancestral gene.