B) E. Coli bacteria
C) human brain cell
Answer:
A.
onion cell
Explanation:
Answer:
Explanation:
It changed from liquid to gas to liquidity
all white
all red
unable to determine
Answer:
All Red
Explanation:
If both the parents have progeny with red seeds and white seeds in the ratio 3:1 then it implies that both the parents are phenotypically having all red seeds while their genotype will be Rr & Rr i.e. heterozygous.
The reason why they produced progeny with white seeds even though they both are having all red seeds is because they both have one recessive allele (r) which was masked by their dominant allele (R) in thembut when they were crossed some of the progeny which received both the recessive alleles (rr) produced white seeds because those progeny did not have dominant allele (R) which could mask the expression of recessive allele. In rest of the progeny, there was at least one dominant allele which did not let recessive allele to express and all those progeny produced red colored seed.
The Punnett square diagram is attached.
It is clear from the diagram that 3 (RR, Rr & Rr) out of the 4 probable progeny have red seeds while only 1 (rr) has white seeds so red: white ratio is 3:1
B. The second word is always capitalized.
C. The first word is always lowercase.
D. The first word indicates the organism's genus classification.
b. Allele change and microevolution
c. Slow adaptation, stasis, and expansion
Answer:
A. Migration, genetic drift, speciation and natural selection.
Explanation:
Migration, genetic drift, speciation and natural selection factors are common to both .Gradualism and punctuated equilibrium are two ways of the evolution. Gradualism is selection and variation that happens. Small variations are fit an organism. In punctuated equilibrium, change comes in spurts. There is a period of very little change, and only few huge changes occur, often through mutations in the genes of a few individuals. Mutations are random changes in the DNA. That are not inherited from the previous generation, but passed in next generation. Though mutations are often harmful, the mutations that result in punctuated equilibrium are very helpful to the individuals in their environments.