Inbreeding restricted gene flow
Answer:
They're made of more than one cell
Explanation:
Answer:
C
Explanation:
The dissecting microscope is used to examine ONLY solid specimens as it works by using reflected light not transmitted light.
Blood will transmit light not reflect it
<span>Answer:
At first, the Earth's surface was for the most part liquid shake that steadily cooled through the radiation of warmth into space. The antiquated environment was made for the most part out of water (H2O), carbon dioxide (CO2) and monoxide (CO), sub-atomic nitrogen (N2) and sub-atomic hydrogen (H2), and hydrogen chloride (HCl) outgassed from liquid shake, with just hints of receptive sub-atomic oxygen (O2). This hot air was rich with water discharged from hydrated minerals and cometary impactors (David Shiga, New Scientist, November 5, 2010; and de Leeuw et al, 2010). As the Earth kept on cooling from Years 0.1 to 0.3 billion, an exuberant rain fell that swung to steam after hitting the still hot surface, at that point superheated water, lastly gathered into hot or warm oceans and seas above and around cooling crustal shake leaving dregs. Now and again, be that as it may, an extensive space rock or comet would strike the planet which remelted crustal shake and transformed seas once again into hot fog. In the end, a stable rough outside layer may have created between Years 0.2 and 0.4 billion (see J. Bret Bennington's exchange of reused zircons (precious stones of zirconium silicate) from the stones of western Australia in the Hadean Eon and the January 11, 2001 declaration of zircons discovered north of Perth that give off an impression of being 4.4 billion years of age), secured and encompassed by soupy water that was at that point rich with natural mixes from interstellar space.</span>
Answer:
recessive
Explanation:
A lethal allele is a gene variant associated with a mutation in an essential gene, which has the potential to cause the death of an individual. In general, lethal genes are recessive because these alleles do not cause death in heterozygous individuals, which have one copy of the normal allele and one copy of the allele for the lethal disease/disorder. In recessive lethal diseases, heterozygous individuals are carriers of the recessive lethal allele and can eventually pass the 'defective' allele on to offspring even though they are unaffected; whereas dominant lethal diseases are caused by dominant lethal alleles, which only need to be present in one copy to be fatal. In consequence, the frequency of recessive lethal alleles is generally higher than dominant lethal alleles because they can be masked in carrier individuals. Some examples of human diseases caused by recessive lethal alleles include, among others, Tay-Sachs disease, sickle-cell anemia, and cystic fibrosis.
