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valkas [14]
3 years ago
8

During what geographical period do the angiosperms become more common

Biology
1 answer:
Kazeer [188]3 years ago
7 0
<span>Cretaceous

</span>Angiosperms evolved during the late Cretaceous<span> Period, about 125-100 million years ago.</span>
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You will receive a set of ten quantitative values for each of three genotypes: aa, Aa, and AA.
miskamm [114]

Mean for the <u>Geno Code 0</u> is average of those ten values ((-3.97)+(-3.99) +(-5.55)+ (-4.56) + (-4.51) + (-4.2 )+( -4.95) + (-4.56) + (-4 )+ (-5.68))/10= -4.597

Standard deviation formula is √((-3.97- (-4.597)2 )+(-3.99-(-4.597)2) +(-5.55-(-4.597)2)+ (-4.56-(-4.597)2) + (-4.51-(-4.597)2) + (-4.2-(-4.597) 2 )+( -4.95-(-4.597)2) + (-4.56-(-4.597)2) + (-4 -(-4.597)2)+ (-5.68-(-4.597)2))/10= √  (0.39+0.37+0.91+0.001+0.007+0.16+0.12+0.001+0.36+1.17)/10= √0.3489=0.59

Mean for the <u>Geno 1 </u>is -0.25 (calculated on the same way as for Geno 0 with different numbers)  and standard deviation for Geno 1 is 0.65.

Mean for <u>Geno 2</u> is 5.241 and standard deviation is 1.038.

2.

If individual Phenotype_Value is 5.11, the corresponding genotype code is Geno code 2 since the value is in the range of values 5.241+- 1.

If individual Phenotype_Value is 5.03 the corresponding genotype code is also Geno code 2.

Since the standard deviation is used to measure the variation (dispersal) of set of data values (how close the values are to the mean value) we can conclude whether are random value is within a certain range.

5 0
3 years ago
What ratio of plants in the offspring would you predict from a Yy x Yy cross?
ziro4ka [17]

Answer:

The correct answer is -

The genotype of offspring - 1:2:1 (YY:Yy:yy)

The phenotype of offspring - 3:1 (dominant trait: recessive trait)

Explanation:

In this question, it is stated that there is a cross between Yy and Yy. By the genotype of the parents, we can say that Y is dominant for a particular trait and y is recessive and the parents are in the heterozygous condition in this cross. The gametes these parents will produce are - Y and y and Y and y

then the cross of Yy and Yy would be -

      Y      y

Y    YY    Yy

y     Yy    yy

Offspring from this cross are YY, Yy, Yy, and yy which means the genotypic ratio is - 1:2:1 and the phenotypic ratio is - 3:1 as three out of four are dominant.

3 0
4 years ago
The parts of an organism’s environment that are living or once living, and interact with the organism are
rodikova [14]

Answer:

An organism interacts with both the living and nonliving parts of its habitat.

Explanation:

Biotic FactorsThe parts of a habitat that are living, or once living, and that interact with an organism are called biotic factors.

7 0
3 years ago
Sara and Juan conducted an experiment to test which soil would be BEST for growing plants. They used sand, silt, and clay. They
Marina86 [1]

Answer:

a) silt is the best type of soil for growing bean seeds

6 0
3 years ago
Pls help im struggling i’ll give branliest
rjkz [21]

Its d if not im so very sorry

3 0
3 years ago
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