N5- Unit 1 MO4- Reproduction, variation, inheritance Sexual
... MO4- Reproduction, variation, inheritance Sexual reproduction in animals 1-What is the biological name given to Gametes sex cells? 2-Meaning of haploid? A cell which nucleus contains only 1 set of chromosomes. In animals, only gametes are haploid. 3-Biological name of an organ Gonad producing sex ce ...
... MO4- Reproduction, variation, inheritance Sexual reproduction in animals 1-What is the biological name given to Gametes sex cells? 2-Meaning of haploid? A cell which nucleus contains only 1 set of chromosomes. In animals, only gametes are haploid. 3-Biological name of an organ Gonad producing sex ce ...
SBI3U: Dihybrid Cross and Pedigree Worksheet
... Within tribble populations coat texture (stiff bristles verses soft short fine hair) and toe type (clawed verses no claws) are autosomal genes. As a geneticist, you are doing the following cross: male parental phenotype is soft, short fine hair and no toe claws; female phenotype is stiff bristles an ...
... Within tribble populations coat texture (stiff bristles verses soft short fine hair) and toe type (clawed verses no claws) are autosomal genes. As a geneticist, you are doing the following cross: male parental phenotype is soft, short fine hair and no toe claws; female phenotype is stiff bristles an ...
Practicing Punnett Squares (Monohybrid Crosses)
... 1. In garden peas, round seed coats (R) is dominant over wrinkled seed coats (r). What will the results be of a cross between a homozygous dominant male and a recessive female. 2. In peas, yellow color (Y) is dominant to green (y). What will be the results of a crosspollination of a heterozygous fem ...
... 1. In garden peas, round seed coats (R) is dominant over wrinkled seed coats (r). What will the results be of a cross between a homozygous dominant male and a recessive female. 2. In peas, yellow color (Y) is dominant to green (y). What will be the results of a crosspollination of a heterozygous fem ...
Bio 1B, Spring, 2008, Evolution section 1 of 3 Updated 3/13/08 11
... other mechanisms that result in new combinations of alleles. Sexual reproduction is an evolved trait There is great variety in modes of sexual reproduction • Isogamy vs. aniogamy: isogamous species produce gametes of the same size and form; anisogamous species produce gametes that differ in size ...
... other mechanisms that result in new combinations of alleles. Sexual reproduction is an evolved trait There is great variety in modes of sexual reproduction • Isogamy vs. aniogamy: isogamous species produce gametes of the same size and form; anisogamous species produce gametes that differ in size ...
Longer Dihybrid questions File
... plain brown one. Carry out this cross through the F2 generation. b. Carry out to the F2 generation a cross between a homozygous plain red bird and its homozygous checkered brown mate. c. A plain brown female pigeon laid five eggs. The young turned out to be: 2 plain red, 2 checkered red, and 1 check ...
... plain brown one. Carry out this cross through the F2 generation. b. Carry out to the F2 generation a cross between a homozygous plain red bird and its homozygous checkered brown mate. c. A plain brown female pigeon laid five eggs. The young turned out to be: 2 plain red, 2 checkered red, and 1 check ...
Structure of mating systems
... As a result of differences in the survivorships of the two sexes, the sex ratio may also change with age in a population. Think of the human population. There is a primary sex ratio. It is the number of male and female embryos conceived in a population. The secondary sex ratio is the ratio of the ...
... As a result of differences in the survivorships of the two sexes, the sex ratio may also change with age in a population. Think of the human population. There is a primary sex ratio. It is the number of male and female embryos conceived in a population. The secondary sex ratio is the ratio of the ...
Sex-linked genes - Mercer Island School District
... 4. A rancher owns a bull with many desirable characteristics. Unfortunately, he also has a sexlinked trait that in the recessive form leads to no pigment formation in the iris of the eye. This makes the bull very sensitive to sunlight and could lead to blindness. The rancher wishes to breed him to a ...
... 4. A rancher owns a bull with many desirable characteristics. Unfortunately, he also has a sexlinked trait that in the recessive form leads to no pigment formation in the iris of the eye. This makes the bull very sensitive to sunlight and could lead to blindness. The rancher wishes to breed him to a ...
Natural Science 2
... Answer the following questions below on a separate sheet of paper: Monohybrid Cross: 1. In a certain animal, black fur (B) is dominant to white fur (b). Determine the expected genotypic and phenotypic ratios resulting from crosses between two heterozygous blacks. 2. In fruit flies, long wing (L) is ...
... Answer the following questions below on a separate sheet of paper: Monohybrid Cross: 1. In a certain animal, black fur (B) is dominant to white fur (b). Determine the expected genotypic and phenotypic ratios resulting from crosses between two heterozygous blacks. 2. In fruit flies, long wing (L) is ...
Male Mexican mollies grow mustaches to attract mates
... a male will often "nip" the genital area with its small live-bearing fish living in Mexico in freshwater mouth just before mating. lakes and ponds, creeks and rivers, and in brackish and even marine waters. The species is Professor Schlupp said other species of fish, unusual in that their courtship ...
... a male will often "nip" the genital area with its small live-bearing fish living in Mexico in freshwater mouth just before mating. lakes and ponds, creeks and rivers, and in brackish and even marine waters. The species is Professor Schlupp said other species of fish, unusual in that their courtship ...
Free Response Questions
... c. Explain how the behavior of these two pairs of homologous chromosomes during meiosis provides the physical basis Mendel’s two laws of inheritance. Labeled diagrams that are explained in your answer may be useful. 2. 2004 Meiosis reduces chromosome number and rearranges genetic information. a. Exp ...
... c. Explain how the behavior of these two pairs of homologous chromosomes during meiosis provides the physical basis Mendel’s two laws of inheritance. Labeled diagrams that are explained in your answer may be useful. 2. 2004 Meiosis reduces chromosome number and rearranges genetic information. a. Exp ...
Punnett Square Practice
... possible. The dog can hear, so the owner knows his genotype is either DD or Dd. If the dog’s genotype is Dd, the owner does not wish to use him for breeding so that the deafness gene will not be passed on. This can be tested by breeding the dog to a deaf female (dd). Draw the Punnett squares to illu ...
... possible. The dog can hear, so the owner knows his genotype is either DD or Dd. If the dog’s genotype is Dd, the owner does not wish to use him for breeding so that the deafness gene will not be passed on. This can be tested by breeding the dog to a deaf female (dd). Draw the Punnett squares to illu ...
Poultry Breeding and Basic Genetics
... • Derived from the White Leghorn • White eggs • ~ 3.3 lbs. ...
... • Derived from the White Leghorn • White eggs • ~ 3.3 lbs. ...
Punnett Square Practice
... kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, so the owner knows his genotype is either DD or Dd. If the dog’s genotype is Dd, the owner does not wish to use him for breeding so that the deafness gene will not be passed on. This can be tested ...
... kennel owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, so the owner knows his genotype is either DD or Dd. If the dog’s genotype is Dd, the owner does not wish to use him for breeding so that the deafness gene will not be passed on. This can be tested ...
Biology 621 Practice Problems in Mendelian Genetics
... Two cats are mated. One of the parent cats is long-haired (recessive allele). The litter which results contains two short-haired and three long-haired kittens. What does the second parent look like, and what is its genotype? ...
... Two cats are mated. One of the parent cats is long-haired (recessive allele). The litter which results contains two short-haired and three long-haired kittens. What does the second parent look like, and what is its genotype? ...
Punnett Square Practice Problems
... this plant up) is crossed with a fuzzywhatsit with yellow-striped leaves. The cross produces 4 green-leafed fuzzywhatsits. ◦ A. What were the genotype of both parents? ...
... this plant up) is crossed with a fuzzywhatsit with yellow-striped leaves. The cross produces 4 green-leafed fuzzywhatsits. ◦ A. What were the genotype of both parents? ...
Human reproductive s.. - hrsbstaff.ednet.ns.ca
... 2. Explain the function of the following structures of the female reproductive system. (5) a. vagina – organ of sexual intercourse and birth canal b. cervix – opening of the uterus, protects the uterus from bacterial infections c. uterus – houses the developing fetus d. ovaries – produces egg and es ...
... 2. Explain the function of the following structures of the female reproductive system. (5) a. vagina – organ of sexual intercourse and birth canal b. cervix – opening of the uterus, protects the uterus from bacterial infections c. uterus – houses the developing fetus d. ovaries – produces egg and es ...
Practice Midterm Solutions
... produce: heterozygous long-fingered woman x homozygous short-fingered man. Give sex and finger length of children. a) All long-fingered girls; all long-fingered boys b) all short-fingered girls; all short-fingered boys c) All long-fingered girls; ½ long-fingered and ½ short fingered boys d) ½ long-f ...
... produce: heterozygous long-fingered woman x homozygous short-fingered man. Give sex and finger length of children. a) All long-fingered girls; all long-fingered boys b) all short-fingered girls; all short-fingered boys c) All long-fingered girls; ½ long-fingered and ½ short fingered boys d) ½ long-f ...
human reproduction and development what you need to know
... the environment. The reproductive cycle in males is regulated by hormones such as testosterone. 4.1g The structures and functions of the human male reproductive system are designed to produce gametes in testes and make possible the delivery of these gametes for fertilization. Fertilization and Devel ...
... the environment. The reproductive cycle in males is regulated by hormones such as testosterone. 4.1g The structures and functions of the human male reproductive system are designed to produce gametes in testes and make possible the delivery of these gametes for fertilization. Fertilization and Devel ...
invertebrates and amphibians
... Green Tree Frog Litoria caerula Life span: up to 25 years. Size: 11cm Breeding: 2-3 years old, breed all year round when conditions are right, lay up to 1000 eggs. They hatch in 2-14 days depending on temperature. Habit: Arboreal, nocturnal, solitary (expect to breed) Diet: Mainly insects but will e ...
... Green Tree Frog Litoria caerula Life span: up to 25 years. Size: 11cm Breeding: 2-3 years old, breed all year round when conditions are right, lay up to 1000 eggs. They hatch in 2-14 days depending on temperature. Habit: Arboreal, nocturnal, solitary (expect to breed) Diet: Mainly insects but will e ...
B. *__sexual reproduction_ - two sex cells, usually an egg and a
... 2. An organism with no nucleus divides into two identical organisms by __binary fission___. Example: _amoeba and bacteria__ (amoeba) ...
... 2. An organism with no nucleus divides into two identical organisms by __binary fission___. Example: _amoeba and bacteria__ (amoeba) ...
Punnett Square Practice Problems
... owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, so the owner knows his genotype is either DD or Dd. If the dog’s genotype is Dd, the owner does not wish to use him for breeding so that the deafness gene will not be passed on. This can be tested by bree ...
... owner has a male dog that she wants to use for breeding purposes if possible. The dog can hear, so the owner knows his genotype is either DD or Dd. If the dog’s genotype is Dd, the owner does not wish to use him for breeding so that the deafness gene will not be passed on. This can be tested by bree ...
4.3 Genetics Practice Problems
... brain will develop normally. A couple of parents want to know what the probability is that their baby will have PKU. The man knows that he is a carrier of PKU and his wife is healthy but is unsure if she carries the PKU allele or not. What is the probability of this couple having a child who does NO ...
... brain will develop normally. A couple of parents want to know what the probability is that their baby will have PKU. The man knows that he is a carrier of PKU and his wife is healthy but is unsure if she carries the PKU allele or not. What is the probability of this couple having a child who does NO ...
Intra-sexual selection
... 2. Big dominant male can coerce females to mate. Yet it might also be in the interest of females to do so, because of: genetic quality(?), protection, better resources ...
... 2. Big dominant male can coerce females to mate. Yet it might also be in the interest of females to do so, because of: genetic quality(?), protection, better resources ...
Parasitic Wasps
... with blues or browns. Adults can often be seen during the day feeding on flowers of trees and shrubs. Females possess a long, thin ovipositor, which is often as long as or longer than the body. An ovipositor is not a stinger, but rather a device for laying eggs inside other insects. They attack larg ...
... with blues or browns. Adults can often be seen during the day feeding on flowers of trees and shrubs. Females possess a long, thin ovipositor, which is often as long as or longer than the body. An ovipositor is not a stinger, but rather a device for laying eggs inside other insects. They attack larg ...
Reproduction, Growth and Development in Living
... • Who can reproduce? – A species is defined as a group of similar organisms that can interbreed and produce fertile offspring ...
... • Who can reproduce? – A species is defined as a group of similar organisms that can interbreed and produce fertile offspring ...
Reproductive suppression
Reproductive Suppression involves the prevention or inhibition of reproduction in otherwise healthy adult individuals. It includes delayed sexual maturation (puberty) or inhibition of sexual receptivity, facultatively increased interbirth interval through delayed or inhibited ovulation or spontaneous or induced abortion, abandonment of immature and dependent offspring, mate guarding, selective destruction and worker policing of eggs in some eusocial insects or cooperatively breeding birds, and infanticide (see also infanticide (zoology)), and infanticide in carnivores) of the offspring of subordinate females either by directly killing by dominant females or males in mammals or indirectly through the withholding of assistance with infant care in marmosets and some carnivores.The Reproductive Suppression Model argues that “females can optimize their lifetime reproductive success by suppressing reproduction when future [physical or social] conditions for the survival of offspring are likely to be greatly improved over present ones”. When intragroup competition (competition between individuals belonging to the same group) is high it may be beneficial to suppress the reproduction of others, and for subordinate females to suppress their own reproduction until a later time when social competition is reduced. This leads to reproductive skew within a social group, with some individuals having more offspring than others. The cost of reproductive suppression to the individual is lowest at the earliest stages of a reproductive event and reproductive suppression is often easiest to induce at the pre-ovulatory or earliest stages of pregnancy in mammals, and greatest after a birth. Therefore, neuroendocrine cues for assessing reproductive success should evolve to be reliable at early stages in the ovulatory cycle.Reproductive suppression occurs in its most extreme form in eusocial insects such as termites, hornets and bees and the mammalian naked mole rat which depend on a complex division of labor within the group for survival and in which specific genes, epigenetics and other factors are known to determine whether individuals will permanently be unable to breed or able to reach reproductive maturity under particular social conditions, and cooperatively breeding fish, birds and mammals in which a breeding pair depends on helpers whose reproduction is suppressed for the survival of their own offspring. In eusocial and cooperatively breeding animals most non-reproducing helpers engage in kin selection, enhancing their own inclusive fitness by ensuring the survival of offspring they are closely related to. Wolf packs suppress subordinate breeding.