Answer:
Hi, there the answer is D. related
Explanation:
Homologous structures are similar structures in related organisms.
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<span>Molecular clocksC. take advantage of known mutation rates to estimate how long ago organisms shared a common ancestor.
All of the following are important properties of prokaryotes except
A. prokaryotes are used to make many products for humans.
All of the following patterns were witnessed by Darwin except that species vary
C. within very short spans of time.
The scientific name for a white oak is Quercus alba; the scientific name for a red oak is Quercus rubra.What does this tell you about the organism?
D. White oaks are grouped in the same species category as red oaks.<span>
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<span>Perhaps surprisingly, lakes and rivers constitute a tiny proportion of the world's total freshwater, so answer (b) is correct. Most of the freshwater on our planet is in fact locked up in ice and glaciers, some 68%. The majority of the rest, 30%, is actually underground, in springs and other groundwater feeders. That leaves just 2% that makes up all the rivers, lakes, ponds and other visible freshwater reservoirs that we see in our day-to-day lives.</span>
Answer:
C. Fi 1:0, F2 3:1
Explanation:
Firstly, Mendel's law of segregation states that the alleles of a gene will randomly separate into gametes during gamete formation. In this case involving a single trait, hence, a single gene. Mendel crossed two purebreeding plants i.e. homozygous plants that produced different phenotypes for the same gene. He obtained his offsprings which he called F1 offsprings. He realized that all the F1 offsprings expressed only one phenotype. For example, when he crossed homozygous tall (TT) and short (tt) plants, he got F1 offsprings that were all tall.
He then self-crossed these F1 offsprings to produce a F2 offsprings that had a phenotypic ratio of 3:1 i.e. 3tall, 1short plant. He concluded that the alleles of the single gene had segregated into the gametes but one allele was capable of masking the expression of another, as seen in the heterozygous F1 offsprings that were all tall (Tt).
Hence, he obtained a 1:O ratio for his F1 offsprings then a 3:1 ratio for his F2 offsprings.
Answer:
First, third, and fifth are the answers. Glucose is broken down into carbon dioxide and water. Light energy is absorbed by chlorophyll. Energy is used to convert carbon dioxide and water into sugar.
Explanation
