How the average number of offspring raised to adulthood, Biology

Assignment Help:

Researchers (Helle et al., 2004) analyzed rates of twin births in the Sami population of Northern Scandinavia during the eighteenth and nineteenth centuries. They found that (1) a baby born from a singleton pregnancy was more likely to survive to adulthood than a baby born from a twin pregnancy, and (2) the average number of offspring raised to adulthood was higher for women who had twins than for those who never had twins. These data suggest that in this population , human twinning rate was

a. under direction selection

b. under stabilizing selection

c. under disruptive selection

d. under sexual selection

e. undergoing genetic drift


Related Discussions:- How the average number of offspring raised to adulthood

Pathology of mitral regurgitation, Q. Pathology of mitral regurgitation? ...

Q. Pathology of mitral regurgitation? During left ventricular systole as the pressure rises in left ventricle, blood is pumped simultaneously both into aorta and left atrium. T

Determine the exercises require to do diabetic patient, Determine the Exerc...

Determine the Exercises require to do diabetic patient Exercises are any bodily activity that enhances or maintain physical fitness and overall health. It is performed for stre

Alcohol related emergencies, Alcohol Related Emergencies: Alcohol is o...

Alcohol Related Emergencies: Alcohol is one of  the most serious health problems. Alcoholism is defined as a primary or chronic disease with genetic, psychological and environ

Anatomy, Anatomy: Anatomy (from Greek words anatomia which means separate ...

Anatomy: Anatomy (from Greek words anatomia which means separate and temnein which means to cut open) is a branch of biology and which deals with the study of internal organizatio

Explain micronutrient deficiencies during kwashiorkor, Explain Micronutrien...

Explain Micronutrient deficiencies during kwashiorkor? Almost all the children manifest anaemia (due to iron deficiency) of some degree. Eye signs of vitamin A' deficiency are

How much dopamine do need add from a stock, A cat has just arrived to the v...

A cat has just arrived to the veterinary clinic with low blood pressure. The cat weighs 5 kg, and as the on call Vet you want to use a bag of saline to prepare a dopamine drip for

Explain the sarcomere, For a sarcomere of a skeletal muscle, define the fol...

For a sarcomere of a skeletal muscle, define the following terms: A is the length of the A Band; H is the length of the H Zone; I is the total length of the I Bands in the sarcomer

Differences between ecosystems, Some ecosystems possess relatively large nu...

Some ecosystems possess relatively large number of species as compared to others. This is particularly true of tropical forests which exhibit a very rich-biodiversity. For example,

How can the hemolytic disease of the newborn be prevented, How can the hemo...

How can the hemolytic disease of the newborn be prevented? The Erythroblastosis fetalis can be prevented if in the first delivery of a Rh+ child from a Rh- mother serum contain

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd