As pointed out in the section Evolution of the Y Chromosome, some researchers have predicted that the human Y chromosome will continue to lose genetic information in the future and will completely disappear from the species in about 10 million years. What would happen if the Y chromosome disappeared from the human species?

Q: Bacteria populations display genetic variation such as antibiotic resistance due to mutation. Which…

A: Bacteria reproduce asexually through a process called binary fission. In this process, a parent…

Q: (B) Y TRN TRN TRN TRN Y TRN TRN TRN TRN Y W TRN NRT (C) (D) a b c d TRN V W Y Z TRN TRN a TRN a b Y…

A: Chromosomal rearrangements are a reproductive barriers source and are recombination supressors.…

Q: Which of these can induce phenotypic change to future generations of a population?

A: Answer :- Option (E) is correct. - The following are induce phenotypic change to future generations…

Q: Identify the specific location of the more recently evolvedparts of the brain, compared to the older…

A: The brain size of present day humans are large and globular compared to their early ancestors. Brain…

Q: Why are there no humans with monosomy 22? because chromosome 22 is very small, it is very stable and…

A: The correct option is shown below.

Q: Molecular geneticists interested in the evolutionary history of the human race have concentrated…

A: Only male ancestors pass on Y-chromosome genetic material to their descendants, while only female…

Q: Cloning is the process of creating genetically identical organisms. One simple method of cloning is…

A: Identical twins are monozygotic twins. Monozygotic twins are formed when one zygote splits into 2,…

Q: In a genomic comparison between humans and yeast, what geneswould you expect to be similar?

A: Saccharomyces cerevisiae  is otherwise called as bakers yeast. It is an eukaryotic organism with…

Q: Explain the likely evolutionary origin of mitochondrial and chloroplast genomes. How have the sizes…

A: Mitochondria also are known as a powerhouse because it helps to release energy from food.…

Q: platypus is one of a very small number of mammals that are venomous. Researchers compared the…

A: Most important part in this paragraph is that the two proteins are almost similar in function and…

Q: Why is polyploidy rare in some animals?

A: Polyploidy is a condition in organism where it has more than diploid number of chromosomes.…

Q: In certain animals, such as alligators, sex is determined by temperature.When alligator eggs are…

A: Alligators are reptiles, some undergo parthenogenesis, and alligators' sex is determined by…

Q: If every human gamete contains approximately 30,000 genes and if the forward mutation rate is…

A: Q.   Given Mutation Rate per gene per generation…

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: You have discovered an altered phenotype and cloned the gene responsible. However, the gene you…

A: Introduction :- Phenotype is the morphological characteristics or observable traits , that are the…

Q: In reptiles, sex determination was thought to be controlled by sex-chromosome systems or by…

A: When the sex of an organism is determined by the temperature encountered in embryonic/larval…

Q: In 1-3 sentences:  define the term and the relationship between the terms (a) Deletion (b)…

A: A mutation is a change that occurs in our DNA sequence, either due to mistakes when the DNA is…

Q: You discover a species in which most individuals display a diploid number of 28. However, you alsa…

A: Haploid is the condition in which a cell has a single set of chromosomes.  Triploid is the condition…

Q: In eukaryotic species, sexual reproduction is the producer of genetic diversity. Describe three…

A: In eukaryotes, sexual reproduction is the process in which new recombinations are produced. These…

Q: What role does epigenetics play in the process of genetic evolution?

A: Genetics and evolution have traditionally been understood in terms of changes to the sequence of…

Q: Fathers contribute more new point mutations to theirchildren than mothers. You may know from general…

A: Each cell possess 23 pairs of chromosomes with 22 pairs of autosomes and one pair of sex…

Q: If a father is unaffected by an X-linked condition and the mother is a carrier, what is the…

A: Genetics is the branch of biology that deals with the study of heredity and variations. Gregor…

Q: 1)Ganarles contain one kind of each chromosome because the homologous chromosomes separate during…

A: Homologous chromosomes are the chromosomes having two pieces of DNA in a diploid organism which have…

Q: When comparing evolutionary similarities between different genes within a gene family, it is usually…

A: A gene is a sequence of DNA that codes for a specific protein. Proteins are the building blocks of…

Q: Identical twins each carry the same genome, but over time, can develop different phenotypes. How can…

A: Identical twins are formed as a result of the fertilization of a single egg. The zygote later splits…

Q: On an episode of the science fiction television program Doctor Who, the “Progenation Machine” can…

A: Independent assortment of ghromosomes ensure the production of natural recombination. As described…

Q: how can genomes with a relatively small number of genes produce the vast complexity of phenotypes…

A: The human nuclear genome is simple but a complicated structure. The genome incorporates 3.2 billion…

Q: Mutation

A: A) Genetic in drosophila have provided a wealth of information about a variety of cellular and…

Q: Suppose genetic analysis reveals a serious mutation in a gene in the green region of the left-hand…

A: Chromosomes are filamentous bodies present in the nucleus. They have the ability of self-replication…

Q: Which of the following will tend to lose genes over evolutionary time due to sex chromosome…

A: In mammals there are two sex chromosomes. One is X and other is Y. In birds, the two sex chromosomes…

Q: Rainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male…

A: Chromosomes are thread-like structures present inside the nucleus of the cell. Usually, they are…

Q: The Y chromosome has been shrinking throughout mammalian evolution, but many of its remaining genes…

A: The Y chromosome likely contains 50 to 60 genes that provide instructions for making proteins.

Q: Rainbow trout go through a unique genetic reproductive process. Female eggs are diploid, while male…

A: (Comment : As per the guidelines, we are allowed to answer one question at a time, so I am answering…

Q: Discuss the changes in chromosomes that contribute to the mutations tabulated in Table above

A: A mutation is a change in the nucleotide sequence of DNA that occurs suddenly and permanently. It…

Genetic Evolution

Sexual reproduction produces distinct population variations. Heredity determines the traits and qualities to be passed down to the progeny. Over time, this variation within-species is also affected by the process of human evolution. The study of how genetic variation leads to evolutionary changes is known as genetic evolution. If a trait helps an organism to survive and reproduce, it is more likely to be passed down the generations. It is rare that such traits result in a completely distinct set of traits in descendants than the ancestral population; this can result in the emergence of a new species.