Which of the following decreases the population size?

At what stage of human development would you expect to first see a beating heart?

IRINA_888 [86]

at what stage of human development wuold you exept to first see abeating heart? the answer is ç

6 0

3 years ago

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The scientific name for humans is homo sapiens. what genus do humans belong to

vagabundo [1.1K]

Human genus are called Homo they include the past genetic tree of humanity, with Neanderthals, Denisovans, and other extinct species of hominin. I hope this helps you!

4 0

3 years ago

In pea plants, smooth (S) peas are dominant over wrinkled (s) peas in the single gene controlling pea texture. A plant with smoo

OlgaM077 [116]

Answer:

Ss and ss

Explanation:

Since the smooth trait (S) is dominant over the wrinkle trait (s), the genotype of the wrinkled pea parent is definitely ss.

Also, some of the progeny had wrinkled pea texture (ss). Each of the 2 wrinkled alleles must have been donated by each of the parent. It thus means that the smooth pea parent is heterozygous for the trait (Ss).

Now, let us look at a cross between the two parents;

Ss x ss

Progeny: Ss, Ss, ss, ss.

Phenotypically, 50% of the progeny are smooth peas while 50% are wrinkled.

Looking at the population of each of the phenotype resulting from the cross. 252:247 is approximately a 50:50 ratio.

Hence, the genotypes of the two parents are Ss and ss.

3 0

3 years ago

Julia created a chart to summarize the three types of tectonic plate boundaries. What in her table needs to be correct?

Rzqust [24]

Answer:

Um, first of all this isn't biology it's geography.

Explanation:

But I guess I could help. I think that table C needs to be corrected because divergent plate boundaries are known to separate instead of colliding to form new crust but I could be mistaken so you have to double check. If I am correct please make me brainliest

4 0

2 years ago

What do you notice about the ligands and their receptors in these images?

aliina [53]

Answer:

What can be noticed about the ligands and their receptor is that the configuration of both coincide, as a key would with its lock, which demonstrates the specificity of a receptor by its ligand.

Explanation:

A ligand corresponds to a molecule considered a signal or a messenger, while the receptor is a protein on the cell surface, with the capacity to accept a ligand.

Ligands and receptors constitute pairs that complement each other, so that each receptor can bind to a specific ligand, similar to what happens with a key and a lock.

Once the ligand-receptor complex is formed, changes occur inside the cell, which define a certain effect.

8 0

3 years ago