Events that leads to the production of Siamese/conjoined tw

Q: Explain why males are more likely to express sex-linked diseases than females, for example,…

A: Step 1 Human genetic disorders are defects that are caused by a genetic mechanism like mendelian…

Q: The maternal genome drives the first stage of embryonic development.     True     False

A: In developmental biology, embryonic development, also known as embryogenesis, is the development of…

Q: Embryos carrying dominant lethal genes always abort prior to birth. O True False

A: Corn is an important crop produced commercially and is also used as a model crop to study basic…

Q: Cleavage occurs in a stepwise, and a careful time.     True     False

A: Developmental biology is the branch of biology in which the development of the organisms from the…

Q: The blood fluke is the only fluke in which the sexes are separated

A: Schistosoma is a trematode genus that includes blood flukes. They are parasitic flatworms that cause…

Q: Infertility strikes both men and women. Describe in a summary the biological causes that impair the…

A: Introduction : Infertility is defined as the condition in which a woman is unable to conceive or…

Q: Which of the following releases human chorionic gonadotropin (hCG)? a. inner cell mass b.…

A: Human chorionic gonadotropin (hCG) has properties similar to those of luteinizing hormone of…

Q: Fill in the blank:  The cell resulting from fertilization is called a(an) ___________________.

A: The gametes are present in both males and females. These are the haploid cells that are required for…

Q: Spermatogenesis and Oogenesis result in the production of 4 equally sized meiotic products. Group of…

A: Spermatogenesis and oogenesis are the type of meiotic  divisions. It consists of two division the…

Q: The sex of an offspring is always determined by the(mother, father).

A: The male or father is the one who determines the sex of an offspring .

Q: which genetic disorder fits below description 47 chromosome; XXY karyotype. Affected individuals…

A: when karyotyping is done, it provides the entire chromosome set of an organism with the appropriate…

Q: Women with_________ syndrome have a single X chromosome. They typically ________(do/do not) undergo…

A: Genetic diseases are the diseases that are caused by defects in the gene that occur during mutation…

Q: There are 5 primary oocytes that will undergo cell division, How many polar bodies will be formed…

A: Polar body are small cell produced from the primary oocytes during meiosis. Theses polar body do not…

Q: The picture below represents a G1 cell from a newly discovered species that uses the X/Y sex…

A: Chromosomes can have different shapes on the basis of the position of the centromere.

Q: Prolactin makes the milk, whereas oxytocin ejects the milk out from the mammary glands True False

A: mammary gland, milk-producing gland characteristic of all female mammals and present in a…

Q: Red-green color blindness in humans is due to an X- linked recessive gene. thin

A: Red-green color blindness is the most common variety of color deficiency in humans. It happens to…

Q: Explain the following term: Homozygous:

A: Chromosomes are filamentous bodies found in the nucleus. They are composed of DNA (deoxyribonucleic…

Q: proposed reason for why women go through menopause is _____.

A: The phenomena of Aging differ widely among living things. There are many Evolutionary explanations…

Q: It is estimated that in about 1/150,000 births, an individual is born with 46 chromosomes, both an X…

A: Introduction: Any form of change that occurs in the DNA sequence is referred to as a mutation. A…

Q: Describe the cascade of RNA splicing events initiatedby the Sxl protein that results in female…

A: In drosophila, the pre-mRNA undergoes sex-specific splicing to control sex determination. The…

Q: Gametes 5. Determine the probability of having: (a) Affected children: Possible fertilizations (b)…

A: Sex-linked traits:  In the humans the sex chromosomes are, in females XX and in males XY. The…

Q: Which of the following is inheritable?a) An altered gene in spermb) An altered gene in testesc) An…

A: Genetic inheritance is a scientific phenomenon that describes how the characteristics of the parents…

Q: The gamete that contains the genes contributed by the mother is the egg : allele : sperm I zygote

A: The term gamete was invented by Gregor Mendel an Austrian biologist. The term gamete is the…

Q: Fill in the blank:  A human offspring is called a(an) ___________________ until the end of the…

A: The development of human offspring takes around nine months. The development involves four stages.…

Q: An Agouti with Himalayan gene female rabbit was mated by an albino male. The phenotypes for the…

A: Genes are sequences of DNA that code for specific proteins. Genes are present in specific locations…

Q: The penis and the clitoris both develop from the embryonic genital tubercle. This is possible due to…

A: Genital tubercle, also called as the phallic tubercle, is a tissue/prime structure, that is found in…

Q: The fetal DNA test has been shown to accurately predict all of the following except: A. Trisomy 13…

A: The prenatal testing possesses prenatal diagnosis or prenatal screening that are the aspects of…

Q: Males with a low sperm count have a condition knownas (oligospermia, aspermia).

A: The seminal fluid that is produced in the males of most species contains millions of sperms. This is…

Q: An infertile female cattle with masculinized behavior and non-functioning ovaries, is known as…

A: Note: As per Bartleby Guidelines, For Remaining Answers Please Repost The Question. Introduction:…

Q: In which of the following cases will a Barr body be seen?     only XX     XY     XO…

A: Barr body was a strongly stained inactivated condensed X chromosome found in each somatic cell of…

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: 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: Is the female in this example pregnant? How do you know? Explain how the graph would change if the…

A: Menstrual cycle  Menstrual cycle is a series of natural changes in the hormones level of…

Q: Describe the basis of sex reversal in humans.

A: Sex-reversal is an event in which the sex of an offspring is opposite to the genetically determined…

Q: Fertilization generally occurs in the _________.     fallopian tubes     ovary     uterus…

A: A gamete is a haploid cell that fuses with another haploid cell during fertilization in organisms…

Q: Marfan syndrome is transmitted by a dominant gene.State the probability that a child with an…

A: Marfan syndrome affects the essential parts of the human body, including the bone, eyes, nervous…

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: The sex of an infant will be female when  The mother's ovary produces testosterone early in…

A: The clinical term that is used to define the unborn yet growing offspring inside a mother's womb is…

Q: The phenotype of an early-stage human embryo is considered sexually indifferent. Explain why this is…

A: Sexual reproduction occurs in human beings. The fusion of egg with sperm known as fertilization. The…

Q: “carrier

A: X-linked inheritance means that the gene causing the trait or the disorder is located on the X…

Q: Complete cleavage is called meroblastic.

A: Cleavage refers to the rapid mitotic cell division in fertilized egg.It does not change cell size…

Q: In humans, the oocyte (egg) completes meiosis right before it is released from the ovar O True False

A: Oocyte It is the cell present in the ovary which has the capability of undergoing meiotic division…

Q: External fertilization Internal fertilization Parental Care

A: Fertilization is the process of sexual reproduction in which the male and female gametes fuse to…

Q: Levels of ____________________ are maintained at high levels throughout pregnancy to prevent…

A: The menstrual cycle is a combination of two different cycles called the uterine cycle and the…

Q: true or false: Identical twins are a result of totipotent cells splitting apart after one egg is…

A: Humans are sexually reproducing organisms in which the fertilization and embryonic development…

Q: This is caused by the presence of certain cytoplasmic determinants from the expression of nuclear…

A: The most common mode of inheritance pattern is through the nuclear genes. The DNA forms the basis of…

Q: Shared germs as well as shared genes produce identical twin similarities. Explain

A: Germ cells also referred as sex cells pertains to sperms and eggs that are produced as a result of…

Q: Which of the following is NOT one of the events leading to male sex-determination in humans?   The…

A: Answer ; wolffian ducts are degraded. - if wolffian ducts are degraded then mullerian hormone is…

Q: which genetic disorder fits below description trisomy 13.  Affected individuals have Microencephaly,…

A: Genetic disorder is a diseased condition or disorder which is caused by the abnormalities in the…

Q: The gamete that contains the genes contributed by the father is the spem :allele : egg # zygote

A: BASIC INFORMATION  GAMETOGENESIS  It is the process of formation of gametes. The diploid…