Why is polyploidy lethal to humans? Interestingly, polyploidy is lethal regard-less of the sexual phenotype of the embryo(e.g., triploid XXX humans, which develop as females, die, as do triploid ZZZ chickens, which develop as males), and polyploidy causes much more severe defects than tris...
In humans, a genotype consists of two alleles, or variations, for a given gene. This is because humans have two copies of each gene- one from each parent. Sometimes these variations are the same, and sometimes they're not.Answer and Explanation: Siblings have different DNA do to the genet...
Heredity occurs in all living organisms. When a cell makes an exact copy of itself, known as mitosis, two duplicate cells are created. All traits are passed on by this simple duplication. Meiosis is a different process using chromosomes from two parents and combing into a new organism. The ...
This whole “LGBTQ+ four of the Natural History Museum appears to rest entirely on the naturalistic fallacy (see the26-minute video, too). Whatever happensvis-à-vissex in animals has nothing to do with how we regard homosexuality (or any other non-cis sexual behavior) in humans. We do ...
Let’s break it down. The first part of the cell theory states that all living things are made up of cells.Anything that’s alive, from bacteria to plants to humans, is composed of cells.And what are cells? The literal definition is a cell is a group of organelles surrounded by athin...
During meiosis, the paired chromosomes separate and form haploid cells, resulting in 4 gametes with a single set of chromosomes. May 20, 2006 #1 pivoxa15 2,255 1 Is the reason why chromosomes come in paris, the fact that they look like a cross and each 'slash' (i.e / and \) ...
Because mitochondrial DNA are transferred from the mother to her offspring unchanged, scientists can use the variation in mitochondrial DNA across modern humans to estimate a rate of mutations (one every 3,500 years) and estimate a time back to a common ancestor who lived around 200,000 years ...
Q: Would it be possible for humans to terraform mars? Q: Can light be used to transfer energy instead of power lines? Particle physics, neutrinos, and chirality too! Q: What are integral transforms and how do they work? Q: How does reflection work? Q: W...