The right answer for the question that is being asked and shown above is that:(1) B) is the main means by which new species arise(2) C) If two organisms look different, they must be different biological species.(3) D) Two crayfish species cannot interbreed because their genitalia do not engage properly with each other.(4) A) genetic drift(5) D) punctuated equilibrium
Answer:
after the last zero
Explanation: because thats where the whole number ends and after that the decimals begin
Answer:
75% red, 25% other color (brown?)
Explanation:
A cross between two heterozygous red eye flies (Rr x Rr)
R r
R <em>RR Rr</em>
r <em>R</em>r <em> rr</em>
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The possible genotypes are RR, Rr, and rr. There are two possibilities of Rr.
Since the heterozygotes have red eyes, the red eye allele must be dominant. Therefore, RR and Rr genotypes will all have red eyes. That means 3/4 (75%) of offspring will have red eyes. 1/4 25% are h0m0zygous recessive (rr), and will therefore have the other eye color (question doesn't mention which colour this is, it is likely brown)
Answer:
You have not consumed lactose from dairy recently
Explanation:
According to the diagram, there is a represssor element in the regulatory region of the operon. This repressor is blocking the RNA polymerase, that is bound to its promoter region upstream of the genes, from transcription. The repressor is mostly the lac repressor that switches of the operon in the absence of lactose.
The horse will give 32 chromosomes and donkey will give 31 chromosomes to the offspring.
The offspring has 63 in total.
It is odd so it can not produce normal germ cell. So it is sterile.