4 types of fossils are Imprints, Molds and Casts, Coprolites and Gastroliths
Ans.
The process that involves exchange of genetic material between homologous chromosomes, is known as crossing over. It occurs during meiosis I (between prophase I and metaphase I).
Crossing over is responsible for the variation in organisms as it makes new genetic combinations in the offspring that are absent in either parents and thus, contribute to genetic diversity.
Thus, the correct answer is 'crossing over.'
Answer:
The nitrogenous bases guanine and adenine are A. purines.
Explanation:
Adenine and guanine are purines, whereas the other two bases in DNA (thymine and cytosine) are pyrimidines. The main difference between purines and pyrimidines is the number of rings that the base has: purines have two rings while pyrimidines only have one ring.
In addition, phosphate group and sugar group cannot be the answer to this question because these two elements in addition to a nitrogenous base makes up a nucleotide.
Hope this helps!
Answer: Distance is the length of the path travelled, following all of the turns or curves of ... over a certain period of time, using the known acceleration due to the force of gravity on ... another way, for every second that an object falls, its velocity will increase by ... A car travels a distance of 60 kilometers in 2 hours.
Explanation:
Climograph 1: F М M S O 2 0 In. 90 28 80 26 70 24 50 22 SO 20 1:1 40 : ! :1 :D 18 Mean Annual Temperature 52°F Total Precipitation 40.8" 30 16 14 10 1:1 : 12 1 O 10 -10 8 -20 6 4 2 -50 58
Climograph 1: 1.
