In birds: females are ZZ and males are ZW females are ZO and males are ZZ females are XX and males are XY females are XX and males are XO females are ZW and males are ZZ

Q: Some marine fishes exhibit a spectacular polyphenism, in that individuals can, under special…

A: Sequential hermaphroditism occurs when the individual changes sex at some point in its life and…

Q: Satellite and attached male horseshoe crabs do not have the same reproductive success. Why hasn’t…

A: Satellite male These are the male that waits near male to intercept females lured to the other…

Q: The  mode of Protenor butterfly sex determination is based on ________.   ZW and ZZ for females and…

A: Heterogamety is a condition in which the organism produces different sex gametes. For suppose taking…

Q: In polygynous species, why do females in good condition invest more energy in male offspring than in…

A: Polygyny is a type of mating system where one male mates with multiple females. It is widely seen in…

Q: The northern red-legged frog, or Rana aurora, is found along the western coast from British Columbia…

A: Reproductive isolation is the inability of a species to breed successfully with related species due…

Q: Check All That Apply Glow fish can't reproduce. Only males can pass on the glow trait. Glow fish can…

A: Explanation: The initial mating experiment between glowing fish discovered that glow fish can indeed…

Q: Wedow et al. (2018) found that genes which predispose an individual towards gay sex:     improve…

A: The reproductive system is the most essential system of the human body. Any change or dysfunction in…

Q: In snouters, mucus color to catch prey shows incomplete dominance. Red mucus color is dominant to…

A: Incomplete dominance occurs when a dominant allele, or type of a gene, does not fully overshadow the…

Q: Which reproductive strategy leads to genetic variance in offspring, rather than simply maintaining…

A: Reproduction is basically the mechanism by which the organism produces young ones similar to itself…

Q: state the genetic behavior of the wild parental honey bee queen and worker

A: Workers are produced from an egg which the queen selectively fertilizes from stored sperm. They…

Q: QUESTION 9 Under what circumstances does a one male polygynous group become a multi-male polygynous…

A: The theory of evolution, like other hypotheses, is based on actual data as well as the reasoning for…

Q: In the context of the runaway sexual selection hypothesis, what role does female mate choice play in…

A: In the context of the runaway sexual selection hypothesis, female mate choice plays a central role…

Q: Select all of the statements below that are true. Leave any statements that are false un-selected. O…

A: In complete dominance, only 1 allelomorph within the genotype is seen within the phenotype. In…

Q: When fish that are capable of changing their sex are first females and develop into males later in…

A: Schooling is a group of fish that stay together and swim in the same direction.   Transition is the…

Q: Nursing bees take care of the queen and newly hatched bees. However, nursing bees themselves do not…

A: Introduction There are various modes of reproduction and sex determination present in the animal…

Q: The gene for coat color in rabbits has 4 alleles. One individual rabbit has alleles for this gene. 1…

A: DNA is the genetic material present in the cell. It stands for deoxyribonucleic acid.

Q: Briefly describe examples of polygyny and polyandry among birds.

A: In polygyny, a male animal has more than one mate at a time. But in polyandry, the female has more…

Q: a. What is the expected phenotype of an a cell in which HMRa has been deleted? [Select]

A: HMR is a cryptic mating type gene site  in yeast. The information from HMR is transferred by HO…

Q: The following pattern of mortality was observed in a fictitious mammal. Of the newborn females, half…

A: Reproductive value, in the context of population ecology, is a measure that quantifies the expected…

Q: Indicate the genetic behavior of the different strains of honeybees in the wild

A: INTRODUCTION The Three Bees - sorts of honey bees during a hive. There are differing types of bees…

Q: The following statements describe events in the life cycle of a rabbit. Which of these events…

A: Somatic mutations don't pass on to future generations because they are the variations that occur in…

Q: IVidili Conlem Which of the following are NOT analogous traits? Venomous fangs in cobras and vipers…

A: Introduction: The organs which are different in their basic structure and developmental origin but…

Q: Based on the fictional graph below investigating the impact of color on the # of eggs laid by female…

A: Female dragons are also called drakaina. It is a female serpent or dragon and , sometime with…

Q: Having a post-reproductive stage in the life cycle is unique to: Group of answer choices all…

A: A species is supposed to have a post-reproductive stage if a female of the adult population expects…

Q: This diagram illustrates a type of reproductive process in an organism. Parent Offspring B. Based on…

A: Reproduction is the natural cycle by which new individual creatures – "offspring" – are delivered…

Q: In seahorses, males incubate and care for offspring. Thus, the males are more likely to be tied up…

A: Sexual behavior refers to the actions, activities, and interactions related to the expression of…

Q: Male parental care occurs in only 7% of fishes and amphibianspecies with internal fertilization but…

A: Introduction  Reproduction is the characteristic of all biological species present on the Earth. All…

Q: How many Barr bodies would you expect in a 48,XXYY individual? 3 4 0 2 1

A: The inactivated X chromosome present in the normal female somatic cell is known as Barr body.. The…

Q: Individuals of some species of bony fishes change sex, some to maintain more males than females,…

A: Sex change in bony fishes, also known as sequential hermaphroditism, is a unique biological…

Q: Homologies Both mammals and birds are descendants of ancestral reptiles. Meaning, they both…

A: Analogous structures are biological structures with similar functions that arose independently in…

Q: Which of the following set of characteristics would best described a R-selected species (e.g. an…

A: The carrying capacity is denoted by the letter 'K' in K-selected populations. A K-selected…

Q: The L gene in cats controls if they like to sit on your laptop (L) or on the book you are reading…

A: The alleles are generally of dominant and recessive type and some other forms like codominant are…

Q: Define sexual selection and describe an example of intersexual and intrasexual sexual selection in…

A: Natural selection is a process by which organism adapt to the new traits or charecteristics which…

Q: Dizygotic twins result from one egg cell and one sperm cell. one egg cell and two sperm cells. two…

A: To form indistinguishable or monozygotic twins, one fertilised egg (ovum) splits and forms into two…

Q: You are raising a stock of Drosophila flies in which you have clipped off the wings of each…

A: Evolution is the process by which the composition of species in the earth become changed. By this…

Q: |(A) A well trained alien biologist visiting earth would be able to tell that the mating system of…

A: Note: Since you have posted multiple questions, so we will be solving the first one for you. As per…

Q: In radishes long radish L is dominant over short radish. A farmer cross pollinates a long radish…

A: Introduction  The relationship between two variants of a gene is described as dominant. Each gene…

Q: Which scenarios are examples of reproductive barriers between closely related species that can cause…

A: Reproductive barriers are also known as reproductive isolation or mechanism. Reproductive barriers…

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: Which of the following organisms would have 4 copies of the Hox genes?     lancelets     lamprey…

A: Hox genes are also known as homeotic genes . Hox genes code for transcription factor that play…

Q: Female Pacific walruses migrate north each summer and return south to mate with the males before the…

A: Hi! As you have posted multiple questions and have not mentioned which are to be answered, we are…

Q: An egg and similar share:     the same size     the same degree of mobility     the same…

A: An egg is female gamete and sperm is male gamete. Both are used in the process of progeny…