Attached earlobes are recessive to free earlobes. What is the probability of having a child with attached earlobes when two individuals heterozygous for free earlobes mate

1/4

Explanation:

Let the earlobe allele be represented by A. since the attached earlobe is the recessive trait, the genotype would be aa while the free earlobe would be AA. The heterozygous condition would be Aa.

Two individuals heterozygous for free earlobes mated:

          Aa     x     Aa

    AA     Aa     Aa     aa

AA and Aa = Free earlobe = 3/4

aa = attached earlobe = 1/4

Hence, the probability of the couple having a child with an attached earlobe is 1/4.

i think it's c

answer: tributaries flow into rivers.

wetland is a biome that develops when the water gets accumulated in a land exhibiting a huge depression. these form either seasonally or permanently. the water in the wetland comes from rivers, lakes, ocean, flood, rain or other sources. the wetlands includes mangroves, marshes and peatland.

tributaries flow into the rivers develops a wetland because such water will get deposited in the depression and will restrict the original flow of tributary water. hence, water with low drainage current combines with the river water.