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s344n2d4d5 [400]
3 years ago
11

_____ have the highest brain-to-body mass ratio of all large animals.

Biology
1 answer:
Ad libitum [116K]3 years ago
5 0

Humans      is the answer

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What happens on a spring tide
Ray Of Light [21]

Answer:

In both cases, the gravitational pull of the sun is 'added' to the gravitational pull of the moon on Earth, causing the oceans to bulge a bit more than usual. This means that high tides are higher and low tides are lower than average. These are called 'spring tides.

Explanation:

6 0
3 years ago
Caloric restriction in animals has been shown to _____.
ladessa [460]
Caloric restriction in animals have been shown to R.ETARD AGING AND TO EXTEND LIFE SPAN.
Various research studies have shown that overeating shorten life span while reduce caloric intake r.etard aging and extends life span. In animal study, it has been shown that calorific restriction makes animals to live longer.

6 0
4 years ago
PLEASE HELP!! I’m very confused
IRISSAK [1]

Answer:

mRN: CAU GCG CAU AUG GCU CUA G

Explanation:

DNA to mRNA

• Possible Bases: Adenine, Thymine, Cytosine, Guanine, Uracil (RNA only)

• G↔C, A→U, T→A

• A and G are purines (double‐ring), C, T, and U are pyrimidines (single‐ring)

6 0
3 years ago
A researcher planted 160 seeds from an F2 cross of two hybrid purple flowered plants and got 123 purple flowered progeny and 37
gladu [14]

Answer:

Chi square value = 0.3

In order to find the expected value, an assumption of purple flower colour dominance over white flower colour has to be made.

Explanation:

<em>First, we will assume that the purple flower trait is dominant over white flower trait, and that the alleles segregate according to Mendelian standard. Hence, the expected F2 phenotypic ratio will be 3:1.</em>

In order to get the Chi square, the expected phenotype frequency will be calculated thus;

Expected frequency (E) for purple flowered plants = 3/4 x 160 = 120

Expected frequency (E) for white flowered plants = 1/4 x 160 = 40

Observed frequency (O) for purple flowered plants = 123

Observed frequency (O) for white flowered plants = 37

<em>Chi square X^{2} = (O - E)^{2}/E</em>

For the purple colour flower

X^{2} = (123 - 120)^{2}/120, which gives 0.075

For the white colour flower

X^{2} = (37 - 40)^{2}/40, which gives 0.225

<em>Total X^{2} = 0.075 + 0.225, which gives 0.3</em>

8 0
4 years ago
Compare embryonic and adult stem cells in animals
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Embryonic stem cells derived from blastocysts are pluripotent (able to differentiate into many cell types). Adult stem cells, which were traditionally thought to be monopotent multipotent, or tissue restricted, have recently also been shown to have pluripotent properties.
7 0
3 years ago
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