The Evolution and Consequences of Sex-Specific
... hermaphrodites (Proulx 2000), dispersal in structured populations (Shpak 2005; Shpak and Proulx 2007; Lehmann and Balloux 2007), and helping behaviors in social animals (Lehmann and Balloux 2007; Beckerman et al. 2011). These models have highlighted that selection against reproductive variance may b ...
... hermaphrodites (Proulx 2000), dispersal in structured populations (Shpak 2005; Shpak and Proulx 2007; Lehmann and Balloux 2007), and helping behaviors in social animals (Lehmann and Balloux 2007; Beckerman et al. 2011). These models have highlighted that selection against reproductive variance may b ...
a comparison of the frequencies of visible in different
... this procedure a stock of flies was obtained having all the genes normal, except for the recessive mutant located in the second pair of chromosomes which is responsible for the brown eye-color. This latter gene, being homozygous in both males and females, was used as a marker against contamination o ...
... this procedure a stock of flies was obtained having all the genes normal, except for the recessive mutant located in the second pair of chromosomes which is responsible for the brown eye-color. This latter gene, being homozygous in both males and females, was used as a marker against contamination o ...
endosymbiont distorts sex chromosome inheritance
... bioRxiv preprint first posted online Mar. 9, 2017; doi: http://dx.doi.org/10.1101/115386. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. All rights reserved. No reuse allowed without permission. ...
... bioRxiv preprint first posted online Mar. 9, 2017; doi: http://dx.doi.org/10.1101/115386. The copyright holder for this preprint (which was not peer-reviewed) is the author/funder. All rights reserved. No reuse allowed without permission. ...
Heterosis, epistasis and linkage disequilibrium in
... trailing edge of the forewing, or both. As this condition is always common in backcross broods, where brown segregants must be Bb, such crosses are all scored as BB x Bb. In 11 of these cases, all of which must be either Ec/bC x Bc/Bc or B C / B c x Bc/bc as they are backcrosses at the C locus, neit ...
... trailing edge of the forewing, or both. As this condition is always common in backcross broods, where brown segregants must be Bb, such crosses are all scored as BB x Bb. In 11 of these cases, all of which must be either Ec/bC x Bc/Bc or B C / B c x Bc/bc as they are backcrosses at the C locus, neit ...
Xerus inauris
... ranges, display no dominance hierarchy, and interact amiably with each another (Waterman 1995). A ‘‘dominant female’’ was described without supporting data (Herzig-Straschil 1978). Male groups are not territorial and have frequent immigration and emigration of members. Males have a distinct linear h ...
... ranges, display no dominance hierarchy, and interact amiably with each another (Waterman 1995). A ‘‘dominant female’’ was described without supporting data (Herzig-Straschil 1978). Male groups are not territorial and have frequent immigration and emigration of members. Males have a distinct linear h ...
How To Work Pedigree Charts
... Pedigree charts are graphic representations of inheritance in a family. There are certain features common to all charts. Males are represented by squares and females by circles. If an individual exhibits a trait, the circle or square is filled in. If they lack a trait, the circle or square remains o ...
... Pedigree charts are graphic representations of inheritance in a family. There are certain features common to all charts. Males are represented by squares and females by circles. If an individual exhibits a trait, the circle or square is filled in. If they lack a trait, the circle or square remains o ...
punnet squares, crosses, linked genes and pedigreesppt
... physically close to each other on the same chromosome • less likely to be independently assorted (separated from each other) during crossing over in meiosis ...
... physically close to each other on the same chromosome • less likely to be independently assorted (separated from each other) during crossing over in meiosis ...
CHAPTER 12 CHROMOSOMAL PATTERNS OF INHERITANCE
... 2. If 1% of crossing-over equals one map unit, then 6% recombinants reveal 6 map units between genes. 3. If crosses are performed for three alleles on a chromosome, only one map order explains map units. 4. Humans have few offspring and a long generation time, and it is impossible to designate matin ...
... 2. If 1% of crossing-over equals one map unit, then 6% recombinants reveal 6 map units between genes. 3. If crosses are performed for three alleles on a chromosome, only one map order explains map units. 4. Humans have few offspring and a long generation time, and it is impossible to designate matin ...
Selection - Integrative Biology
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
Selection - Integrative Biology
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
Performing a fly cross
... 1). The urn corresponding to female chromosome 3 has two types of balls, m and b, s. The male urn has only one type of ball, +. The offspring chromosome pair gets one ball from the female urn and one from the male urn. The offspring have a 50/50 chance of being male or female, so all possible offspr ...
... 1). The urn corresponding to female chromosome 3 has two types of balls, m and b, s. The male urn has only one type of ball, +. The offspring chromosome pair gets one ball from the female urn and one from the male urn. The offspring have a 50/50 chance of being male or female, so all possible offspr ...
Selection - Integrative Biology
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
Evolution #12 Selection
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
... anisogamy (i.e., having gametes of different size in two sexes). If reproduction is limited by the production of eggs or ovules and not sperm or pollen, then males are competing for females, who become a limiting resource. Darwin recognized that any characteristic that would increase an individual’s ...
pdf version - McMaster MD program
... Background: 46,XX testicular disorder of sexual development is a rare cause of primary hypogonadism, characterized by a male phenotype despite a female (i.e. 46,XX) karyotype. In the vast majority of cases, it is caused by a translocation of Y chromosomal material (containing the SRY gene) onto an X ...
... Background: 46,XX testicular disorder of sexual development is a rare cause of primary hypogonadism, characterized by a male phenotype despite a female (i.e. 46,XX) karyotype. In the vast majority of cases, it is caused by a translocation of Y chromosomal material (containing the SRY gene) onto an X ...
Genetics of a wing size difference between two Nasonia species
... cured of their associated cytoplasmic bacterial infections (Wolbachia), form viable and fertile hybrids (Breeuwer & Werren, 1990, 1995). Due to the haplodiploid sex determination in Nasonia, F1 hybrids produced in interspeci®c crosses are female, only males are derived from unfertilized eggs and the ...
... cured of their associated cytoplasmic bacterial infections (Wolbachia), form viable and fertile hybrids (Breeuwer & Werren, 1990, 1995). Due to the haplodiploid sex determination in Nasonia, F1 hybrids produced in interspeci®c crosses are female, only males are derived from unfertilized eggs and the ...
Hybrid breakdown between two haplodiploid species: The role of
... were used, because they mate more readily with males of both species than V [V] females. Females that did not copulate within 30 min were discarded. Females that did copulate were provided with two hosts for egg laying, and presence of females among subsequent offspring (indicating use of sperm) was ...
... were used, because they mate more readily with males of both species than V [V] females. Females that did not copulate within 30 min were discarded. Females that did copulate were provided with two hosts for egg laying, and presence of females among subsequent offspring (indicating use of sperm) was ...
Summary of topics - Integrative Biology
... anisogamy (i.e., having gametes of different size in two sexes). ...
... anisogamy (i.e., having gametes of different size in two sexes). ...
Condition-dependent mutation rates and sexual selection
... In Drosophila melanogaster, maternal DNA repair mechanisms can repair damaged DNA in sperm after fertilization. Females were mated to mutagenized males and the daughters were screened for recessive lethals on the paternally inherited X chromosome. Females maintained on a low-quality diet transmitted ...
... In Drosophila melanogaster, maternal DNA repair mechanisms can repair damaged DNA in sperm after fertilization. Females were mated to mutagenized males and the daughters were screened for recessive lethals on the paternally inherited X chromosome. Females maintained on a low-quality diet transmitted ...
Reproduction - cloudfront.net
... TEKS 7.14B compare the results of uniform or diverse offspring from sexual reproduction or asexual reproduction ...
... TEKS 7.14B compare the results of uniform or diverse offspring from sexual reproduction or asexual reproduction ...
Selection and inheritance of sexually dimorphic juvenile plumage
... LRS as the number of breeding offspring produced. Whether or not an individual bred was modeled as a binomial variable and LRS was modeled using a negative binomial distribution because it is strongly skewed. We limited these analysis to the 2005 and earlier cohorts to exclude birds who still have s ...
... LRS as the number of breeding offspring produced. Whether or not an individual bred was modeled as a binomial variable and LRS was modeled using a negative binomial distribution because it is strongly skewed. We limited these analysis to the 2005 and earlier cohorts to exclude birds who still have s ...
Foundations of Biology
... Plants like corn and peas have both male and female parts which produced sperm and eggs respectively Some animals, for example Caenorhapditis elegans, are also hermaphroditic In both cases there are not genetic differences producing dimorphic genders, instead the various parts develop as a resul ...
... Plants like corn and peas have both male and female parts which produced sperm and eggs respectively Some animals, for example Caenorhapditis elegans, are also hermaphroditic In both cases there are not genetic differences producing dimorphic genders, instead the various parts develop as a resul ...
Sex Determination
... Plants like corn and peas have both male and female parts which produced sperm and eggs respectively Some animals, for example Caenorhapditis elegans, are also hermaphroditic In both cases there are not genetic differences producing dimorphic genders, instead the various parts develop as a result of ...
... Plants like corn and peas have both male and female parts which produced sperm and eggs respectively Some animals, for example Caenorhapditis elegans, are also hermaphroditic In both cases there are not genetic differences producing dimorphic genders, instead the various parts develop as a result of ...
Biology 164 Laboratory Transmission Genetics: Inheritance of
... There are four phases in the life cycle of the fruit fly: egg, larva, pupa and adult. The entire developmental cycle from egg to adult takes about 14 days at 21oC (close to lab room temperature). At higher or lower temperatures, the cycle is proportionally shorter or longer. Eggs are tiny, oval, whi ...
... There are four phases in the life cycle of the fruit fly: egg, larva, pupa and adult. The entire developmental cycle from egg to adult takes about 14 days at 21oC (close to lab room temperature). At higher or lower temperatures, the cycle is proportionally shorter or longer. Eggs are tiny, oval, whi ...
Examples of connected symbols:
... is a sex-linked trait. A colorblind man (XcY) marries a woman who is heterozygous for colorblindness (XCXc). Which of the following could NOT be a genotype of their offspring? XcY XCXc XCXC XCY ...
... is a sex-linked trait. A colorblind man (XcY) marries a woman who is heterozygous for colorblindness (XCXc). Which of the following could NOT be a genotype of their offspring? XcY XCXc XCXC XCY ...
Sexual dimorphism
Sexual dimorphism is a phenotypic differentiation between males and females of the same species. This differentiation happens in organisms who reproduce through sexual reproduction, with the prototypical example being for differences in characteristics of reproductive organs. Other possible examples are for secondary sex characteristics, body size, physical strength and morphology, ornamentation, behavior and other bodily traits. Traits such as ornamentation and breeding behavior found in only one sex imply that sexual selection over an extended period of time leads to sexual dimorphism.