3. In some species, sexual ornaments may evolve to signal to females that the male will providehigh levels of paternal care. However, in other species, such as the red-crested cardinal picturedbelow, there is a negative correlation between the expression of the ornament and paternal care.a) In such species, how might we explain female preference formales with redder heads? b) Imagine that females in the population vary in body condition.How might we expect female mate preferences to vary with femalebody condition? Explain your answer. c) What effect might this have on the strength of sexual selectionfor redder heads?
Proteins
We generally tend to think of proteins only from a dietary lens, as a component of what we eat. However, they are among the most important and abundant organic macromolecules in the human body, with diverse structures and functions. Every cell contains thousands and thousands of proteins, each with specific functions. Some help in the formation of cellular membrane or walls, some help the cell to move, others act as messages or signals and flow seamlessly from one cell to another, carrying information.
Protein Expression
The method by which living organisms synthesize proteins and further modify and regulate them is called protein expression. Protein expression plays a significant role in several types of research and is highly utilized in molecular biology, biochemistry, and protein research laboratories.
high levels of paternal care. However, in other species, such as the red-crested cardinal pictured
below, there is a negative correlation between the expression of the ornament and paternal care.
a) In such species, how might we explain female preference for
males with redder heads?
b) Imagine that females in the population vary in body condition.
How might we expect female mate preferences to vary with female
body condition? Explain your answer.
c) What effect might this have on the strength of sexual selection
for redder heads?
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