Biology Questions
Explore questions in the Biology category that you can ask Spark.E!
How is sperm able to survive for longer periods in some avian species?
Under what conditions are the The ruptured follicles are converted into the corpus luteum?
What structure secretes progesterone to facilitate the implantation and maintenance of the conceptus?
In turkey, how long does the sperm remain viable within the female genital tract?
What type of animals, such as large ruminants and equines, only release one oocyte during each ovulation period?
What conditions are needed for spermatogonia to replicate its DNA to form primary spermatocytes?
In most domestic animals, what is released (ovulated) from the follicle?
What form the spermatogonia that proliferate mitotically throughout most of life of the animal?
In what type of animals such as bitch, sow, cat and small ruminants are more than one oocyte set free from separate follicles?
Ovulation is spontaneous in most mammals, except in what species where ovulation is induced by coitus?
Natural selection (will/will not) produce absolute perfection, not do we always need, as far as we can judge, with this high standard in nature - Darwin
--- may increase the fitness of parents as well as the siblicidal offspring if the offspring that is killed is likely to die anyways
T/F Behavior that results in indirect fitness gains is favored by KIN SELECTION
T/F Sexual reproduction imposes different selection pressures on females vs. males
T/F older birds/chicks that are more closely related to their parents are more likely to be recruited to take care of new chicks
T/F Organisms face fundamental trade-offs in their use of energy and time
is "selection for" essentially an adaptation?
In regards to Number & Size of offspring, selection on parents favors a compromise between the quality and quantity of offspring BUT....
T/F Natural Selection CAN always explain sexual dimorphism
differential reproductive success due to variation among individuals in success at getting mates