a system of interlocking and interdependent food chains.
Answer:
D
Explanation:
all living things are made up of many cells
Chemical<span> Mixtures. A mixture is a material system made up of two or more different</span>substances<span>, which are mixed </span>but not combined chemically<span>. A mixture refers to the physical </span>combination<span> of two or more </span>substances<span> in which the identities of the individual </span>substances<span> are retained.</span>
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.
Answer:
5 lumbar vertebrae
Explanation:
As you can see in the image I annexed, a typical adult skeleton has 5 lumbar vertebrae (colored in red), they are cylindrical bones located between the rib cage and the pelvis, they are the largest segments of the vertebral column. These vertebrae carry all of the upper body’s weight, they protect the spinal cord and nerves in the vertebral canal, they also provide flexibility and movement to the trunk region.
I hope you find this information useful and interesting! Good luck!
