7. Maternal effect: In Limnaea snail cats, R makes right coiled shells; r makes left coiled shells, and R is dominant to r, as we discussed in class. Even though these can be hermaphrodites, and act either as mom or dad, we'll just pretend they are male or female. A Rr male marries an rr female. a) What are the genotypes of their offspring and in what ratio? b) What are the phenotypes of their offspring and in what ratio?

Q: 25) In most social insects, females (workers and queens) develop from fertilized eggs and are…

A: The conflict of interest between the queen and her worker daughters over the generation of…

Q: a) Exhibit a rotational holoblastic cleavage b) During the second division, the dorsal-ventral axis…

A: C. Elegans is a nematode. The C. elegans life cycle comprises of four larval stages L1, L2, L3, L4…

Q: 29. Parthenogenesis is the process that eusocial insects commonly use to: a) Create new hives after…

A: Insects are a class of invertebrate animals that are characterized by having three body segments…

Q: 5. In honey bees, males are developed parthenogeretically while workers are developed after sexual…

A: Step 1 Parthenogenesis is the development of an embryo or new individual from a single gamete…

Q: 18) Define Homozygous and Heterozygous. 19) What are genes? 20) Define Dominant and Recessive.

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: 5. In humans, one type of color-blindness, an inability to distinguish between red and green, is…

A: The alleles are the alternative forms of a gene that are located on the same locus of a homologous…

Q: 1. How many types of twins do exist? 2. What are "semi-identical" twins, and why are they so rare?…

A: When two sperm fertilized a single egg that split into two, then the twins are called semi-identical…

Q: For these organisms to develop into functional offspring of that species, which one of the following…

A: Introduction Embryology is a branch of science which deals with the study of embryonic development.…

Q: In C. elegans there are two sexes: hermaphrodite and male. Sex is determined by the ratio of X…

A: Loss-of-function tra-1 or tra-2 alleles cause male development in XX individuals, suggesting that…

Q: Use the following scenario to answer questions: Stimulation of G-protein coupled receptors on…

A: Human reproduction is dependent on a hypothalamic–pituitary–gonadal (HPG) axis. The hypothalamic…

Q: 8. How many Barr bodies would a Klinefelter male have? O A) 1 O B) 2 O C) 3 O D) None

A: Klinefelter syndrome is an inherited disorder that affects only men. The boy is born with one or…

Q: what is the chromosomal system for determining sex in mammals?

A: Chromosomal determination of sex It is also known as allosomic determination of sex and is based on…

Q: During what embryonic stage can morphogenesis be seen?   Question 9 options:   a)  The morula…

A: Basically morphogenesis means the development of organs and organ system by the process of…

Q: What is one statement that would support the theory that all organisms are related? A) The genetic…

A: In addition to being degenerate, the genetic code is also called to as 'unambiguous,' implying so…

Q: If the blue F1 females in Figure  are backcrossed to the blue males in the P generation, what…

A: Genotype is the genetic constitution of an individual organism. Phenotype is the observable…

Q: Asexual reproduction does exist with numerous unique adaptations, but it is normally sexual with…

A: Reproduction is the biological process where new individual organisms (offspring) – are produced…

Q: If a mother snail is heterozygous, Dd, which gene products will the oocyte receive?

A: The mom's genotype specifically influences her offspring's phenotype Broken rule: gene expression an…

Q: One potential advantage of sexual reproduction is that offspring will have more genetic…

A: Sexual reproduction involves the fusion of gametes from two different individuals resulting in…

Q: Match the species with the way they determine the sex of an embryo (1 each) Mammals a. the Y…

A: Different mechanisms govern sex in different organisms. Some organisms involve two different kinds…

Q: What is the normal size of a rotifer, where is it found, and what are its major features?

A: Rotifers are called wheel animals and are pseudocoelomate animals. These are generally free-swimming…

Q: a. What are the physical differences and similarities in the reproduction systems of plants and…

A: Reproductive system is a system in which one organism give rise to new individuals  . Reproduction…

Q: Question 7 Review exceptions to Mendelian inheritance. Match the term and its description. Each term…

A: Introduction :- Mendelian inheritance pattern is based on the principle of dominant and…

Q: Place the following events in order of which would occur first to last: First Second Third Fourth…

A: Reproduction is the biological process by which new individuals of the same species are produced. It…

Q: Fertilization made artificially in the laboratory is called ___________.a) Invitro fertilization b)…

A: When an egg of a female unites with the sperm of the male, the formation of a fertilized cell…

Q: If m-m- females produce useless eggs, then how are m-m- produced?

A: Sexual reproduction refers to the form of reproduction that occurs through the union of male and…

Q: o mate Drosophila for a lab experiment, you need? 1) virgin female 2)virgin male 3)both male and…

A: NOW a days Drosophila have been used as Model organism. There are various advantages that Drosophila…

Q: 13) Use the image below of the X and Y sex chromosomes of a human to answer the following question.…

A: INTRODUCTION : Chromosomes - In the nucleus of every cell, the DNA molecule is packaged into…

Q: why some birds exhibit sexual dimorphism while others do not." Can someone explain this phenomenom…

A: Reproduction is the process of production of the offsprings by organisms for the sustanence of their…

Q: How is a male rather than a female zygote created? O The female produces a Y chromosome. The female…

A: A zygote is a cell stage that resulted due to the fertilization between two gametes i.e, male and…

Q: why do the embryos of different species resemble each other?

A: The embryo is an early stage of development in multicellular organism (from fertilization to start…

Q: What prevents an individual from mating with itself?

A: Mating is the process when hermaphroditic organisms or individuals of two opposite sex pair up for…

Q: Describe how neurulation occurs. Why is it important?

A: We know that The continuation of species in the world is due to the process of reproduction; either…

Q: 7. Maternal effect: In Limnaea snail cats, R makes right coiled shells; r makes left coiled shells,…

A: The maternal effect refers to an inheritance pattern in genetic, where the phenotype of the…

Q: Describe the three different types of asexual reproduction. How does Daphnia pulex case study, show…

A: Disclaimer: Since there are multiple questions, we have answered the first one for you. If you wish…

Q: Why are toy poodles and rotweilers (dog breeds) members of the same species? A) They can…

A: Thank you for the question : Answer : option c is the correct option that is because  Different…

Q: 26. A sporophyte individual A) has homologous chromosomes and is produced by sexual reproduction B)…

A: Sporophytes are one of two plant life cycle stages and the other is gametophytes. Sporophytes are…

Q: 11. A) Why do we generally see animals with eggs and sperm for gametes (i.e., why do we have two…

A: Evolutionary Stable Strategy ESS is a strategy adopted by a population to adapt to specific…

Q: Which of the following is a advantage of asexual reproduction? a.)Same DNA being passed down-NO…

A: Asexual reproduction is a method of reproduction in which a single parent gives rise to a offspring.…