Answer:
When something goes wrong with the sinoatrial node, you may develop a consistently slow heartbeat (sinus bradycardia) or the normal pacemaker activity may stop entirely (sinus arrest). If sinus arrest occurs, usually another area of the heart takes over pacemaker activity. This area is called an escape pacemaker.
Explanation:
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-Mackie
Answer:
○ D. Humans are using up natural capital faster than it is being replenished.
Explanation:
I assume this is the answer, due to the past/recent media on Earth and the economy.
This is due to the fact that only homologous chromosomes would have identical genes located at identical sites on those chromosomes. Otherwise, there would be no connection between the alleles of various genes.
Although the genes and loci of the two members of the homologous pair are similar, the alleles may vary.For instance, both allele possess the genes responsible for the attribute of eye colour. While the one has alleles for the blue-eye trait, other has alleles for the brown-eye trait. The homologous chromosomes are said to be heterozygous in this instance since the alleles are different.
On the other hand, when both alleles for a gene that codes for the blue-eye phenotype are present, it is said to be homozygous.
To learn more about homologous chromosomes click here
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Answer:
The dihybrid ratio we expect in the offspring is 9:7.
Explanation:
This is an example of complementary gene interaction, which is the non allelic interaction or genes, where the prominent genes at heterozygous loci may complement each other by complementing recessive alleles at the respective loci.
So in this case of complementary gene interaction, the individuals that are A-bb or aaB- or aabb will have the same set of observable features (phenotype) but only A-B- individuals will how the dominant phenotype.
Answer:
we'll use () to indicate the different boxes
( ) (r) (r)
(R) (Rr) (Rr)
(R) (Rr) (Rr)
You will have a 2 by 2 cell for your answer. One set of your test (rr) will go across the top as is shown and the other will be vertical (RR) as shown. Go down the line and put the letter you see at the top in each box and then do the same going across.
( ) (r) (r)
( ) (r) ( )
( ) (r) ( )
( ) (r) (r)
(R) (Rr) (R)
(R) (r) ( )
I tried to make this a comprehensible as possible but just draw your diagram and put the letters in the exact order as shown and then read this. It may make more sense that way.
Explanation:
