80 70 Plains 60 Mountain, zebra zebra African 50 buffalo Greater kudu 40 Mountain reedbuck Wildebeest 30 Dikdik Bushbuck Warthog 20 Gray duiker 15 10 20 50 100 200 500 1000 Adult female body weight (kg) on log scale Length of gestation (weeks) on bg scale 하

Q: Why does sexual dimorphism have important implications for studying human evolution? Explain why and…

A: Sexual dimorphism is a condition in which the sexes of the same species have distinct morphological…

Q: Give three examples of female sexual selection for ornamentation in males and explain how preference…

A: Females choose partners based on particular qualities or behaviours that are regarded as…

Q: Reproductive modes can be defined based on energetic provisioning (lechithotrophy vs. matritrophy)…

A: Based on the mode of reproduction , animals can be classified. Based on the type of partition…

Q: different phases and stages of the estrous cycle

A: The estrous cycle has four stages in particular proestrus, estrus, metestrus and diestrus and goes…

Q: The contraceptive 'SAHELI' is?

A: Contraception is the deliberate use of artificial methods or other techniques to prevent pregnancy…

Q: labeled B

A: This diagram is of a female cat's reproductive system. The female cat reproductive system consists…

Q: To predict: The reproductive success of captive-bred females released in the wild.

A: Our efforts to boost food production rely heavily on biological principles applied to animal…

Q: a.) The conversion of the genital ridge into the bipotential gonad requires the Sf1, Wt1, and Lhx9…

A: Sex determination : There are certain genes which plays important role in sex determination. But…

Q: we discuss various mechanisms of sex determination, including the XX/XY system of placental mammals,…

A: Monotremes are egg-laying mammals that are native to Australia and New Guinea. They are the only…

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: How would low levels of testosterone affect the American alligator population?

A: Testosterone is a steroid hormone that stimulates the development of male secondary sexual…

Q: In our society the women are often blamed for giving birth to daughters. Can you explain why this is…

A: Introduction In this question we will explain wether the statement given in the question is correct…

Q: Define the two events that are common to all sexually reproducing organisms and how they fit into…

A: We know that Sexual reproduction involves the formation of gametes and then simultaneous fusion of…

Q: Which of the following scenarios does NOT describe an event that leads to the conceptions of twins?…

A: While twin pregnancies can occur by some coincidence, there are a few factors that may expand your…

Q: if an endangered species can reproduce by parthenogenesis, what Implications might this have on…

A: In the realm of endangered species conservation, reproductive strategies play a crucial role in…

Q: How many gametes does the male produce per day? The female per month? How does this help in the…

A: INTRODUCTION Male gamete : sperm, 200-600 per ejaculation. Female gamete : ovum, one in each month.

Q: Explain in details the ovulation period in female mammals... Example human being

A: The Duration of Female Reproductive cycle is typically ranges from 24 to 35 days. During…

Q: Why do we consider a growing child to be alive, but not a growing crystal? Is abortion the taking of…

A: The process by which human beings and other living organisms ensure the continuation of their…

Q: “Breeding like rabbits” is a common expression for having largenumbers of offspring. Rabbits are…

A: The domestic rabbit is raised for meat and fur and is able to reproduce year-round, and the female…

Q: In humans, one primary spermatocyte yields _____ sperm and _____ polar body(ies), while one primary…

A: Introduction  A spermatocyte is a type of germ cell in the male reproductive system that is involved…

Q: If a gonadal female is exposed to high levels of androgens in utero (e.g., from excessive production…

A: Hormones are chemical messengers and are secreted by the endocrine glands. The pituitary gland is…

Q: Name the mammal who has shortest gestation period.

A: Mammals are vertebrate animals that organize class Mammalia. They have mammary glands which produce…

Q: Because the reproductive success of female Hanuman langurs (Semnopithecus entellus) is almost…

A: Introduction : Infanticidal males, In order to increase their chances of having successful…

Q: How does the germ layer derivatives develop in mammals and reptiles? Make a comparison.

A: A germ layer is a multilayered cell that develops throughout the embryonic development process.…

Q: why an increased level of FSH raises the likelihood of fraternal twins.

A: Sperm and egg (ova) are male and female gametes respectively. Fertilization is the process of fusion…

Q: Describe the two events that are common to all sexually reproducing organisms and how they fit into…

A: Introduction: The union of male and female gametes leads to sexual reproduction. More viable…

Q: Pandas have become specifically adapted to bamboo forests because they depend on the bamboo for…

A: Giant pandas have developed unique adaptations for their cold, wet habitat and their penchant for…

Q: Shown here are graphs that plot the percentage of fertilizedeggs containing males against the…

A: Temperature-dependent sex determination (TSD) is a means of non-genetic sex determination in some of…

Q: What is evidence that menopause is an adaptive cooperative trait? In humans, the presence of…

A: Introduction When you have gone 12 months without a monthly period, menopause has set in. Hot…

Q: A male and female mouse are mated. The graph below illustrates serum progesterone levels in the…

A: The term "progestin" refers to any chemical that induces some or all of the physiologic actions of…

Q: Can you think of any unusual situation where you might be able to have a Male Calico cat?…

A: Calico cats are those which have a tricolor.  They have three colors in the body .

Q: Is Barr's Corpuscle a Reliable Tool for Sex Determination?

A: Canine morphology is used for the determining the sex. However aside from this technique, X and Y…

Q: How many sexual organs do male koalas have?

A: koala is considered a common tree-living herbivorous animal in Australia. It belongs to the class…

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: Given the results of our calculations of inclusive fitness for male pied kingfishers (Ceryle rudis)…

A: The pied kingfisher (Ceryle rudis) is an African and Asian water kingfisher. It has five traditional…

Q: Please describe two mistakes from the downloaded diagram on fertilization Oocyte Fertilisation

A: Fertilization is the process of sexual reproduction where two haploid gametes, female egg and male…

Q: Female mammals undergo continuous reproductive cycles during their reproductive life. In the sense…

A: Introduction:- Although different species have different reproductive techniques, mammals in general…

Q: Menstruation is the shedding of uterine lining where the egg would have resided for a period of…

A: Female reproductive system: The interior and exterior sex organs which play a role in childbirth…

Q: All mammals have mammary glands regardless of their sex. True or False?

A: Mammary glands are milk producing glands

Q: |(A) Humans have some rather unique features to our reproductive behavior. One strange one, relative…

A: