BIOL208 Lecture Notes - Lecture 9: Sexual Conflict, Promiscuity, Germination

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20 Sep 2016

School

University of Alberta

Department

Biology (Biological Sciences)

Course

BIOL208

Professor

Jessamyn Manson

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Document Summary

50% of genes from mom, 50% genes from dad. 100% x 50% = 50% relatedness to sisters on dad"s side. 50% x 50% = 25% relatedness to sister"s on mom"s side. Sister therefore 75% related to each other. Only 50% related to offspring (male or female) Males: less energetically costly making copious amounts of sperm. Hermaphrodites: over 75% of plants are hermaphrodites, some fish. Instantaneous hermaphrodites: male and female at the same time. Sequential hermaphrodites: male first and then female, or female first and then male. Easier for plants to have a pollen source near by due to mobility. Mating systems define social sexual structures within a population. Genetic monogamist: the mom and the dad really are the parents. Social monogamy: the mom and the dad take care of the kid together, but the kids might not be their genetic offspring. Selection for traits that are not about survival. Secondary sexual traits: traits associated with attracting a mate.

Related Questions

1. A mother with blood type A has a child with blood type A. Give all possible blood types for the father of this child.

a.) O

b.) B, AB

c.) A, AB

d.) A, B, O

e.) A, B, AB, O

2.) In sesame, the one-pod condition (P) is dominant to three-pod (p), and normal leaf (W) is dominant to wrinkled (w). These characteristics assort independently. A one-pod, wrinkled leaf Ã one-pod, normal leaf cross gave a progeny of 654 one-pod, normal leaf plants and 224 three-pod, normal leaf plants. What are the likely genotypes of the parents in this cross?

		a.) Pp ww Ã Pp Ww
b.)		Pp Ww Ã Pp Ww
c.)		Pp ww Ã Pp WW
d.)		PP Ww Ã Pp ww
	e.)	PP ww Ã PpWw

3.) Honeybees have a haplo-diploid sex determination system where females develop from a fertilized egg (they are diploid, having one allele from the female queen and one allele from the male), and males develop from unfertilized eggs (they are haploid, having only one allele from the queen). Assuming that the queen is heterozygous for a particular gene, what is the probability that a female will inherit the recessive allele from her mother? What is the probability that a male will inherit a recessive allele from his mother?

		a.) The probability that a daughter will inherit a recessive allele from her mother is 50%; the probability that a son will inherit a recessive allele from his mother is 100%.
		b.) The probability that a daughter will inherit a recessive allele from her mother is 100%; the probability that a son will inherit a recessive allele from his mother is 50%.
		c.) The probability that a daughter will inherit a recessive allele from her mother is 50%; the probability that a son will inherit a recessive allele from his mother is 50%.
		d.) The probability that a daughter will inherit a recessive allele from her mother is 100%; the probability that a son will inherit a recessive allele from his mother is 100%.

4.) Human males, with XY chromosomes are _____ and produce two different kinds of gametes, whereas females with XX chromosomes are _____ and produce only one kind.

a.)		homogametic; heterogametic
		b.) pleiotropic: epistatic
		c.) heterogametic; homogametic
		d.) epistatic; pleiotropic

5.) A chi-square test is done to test the hypothesis that a set of data represents a F₂ ratio of 9:3:3:1. The degree(s) of freedom that should be used is:

		a.) 1
		b.) 2
		c.) 3
		d.) 4 I DON'T KNOW HOW TO DO THESE PROBLEMS, I WOULD REALLY APPRECIATE SOME HELP AND EXPLANATION ON HOW TO WORK OUT THESE PROBLEMS. THANK YOU VERY MUCH!!!

BIOL208 Lecture Notes - Lecture 9: Sexual Conflict, Promiscuity, Germination

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