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Andrew [12]
3 years ago
9

The direction of shell coiling in the snail Lymnaea peregra results from a genetic maternal effect. An autosomal allele for a ri

ght-handed, or dextral, shell (s+) is dominant over the allele for a left-handed, or sinistral, shell (s). A pet snail named Martha is sinistral and reproduces only as a female. Which one of the following statements is true?
a. Martha's genotype must be SS. T or F
b. Martha's genotype cannot be Ss. T or F
c. At least some of Martha's offspring must be sinistral. T or F
d. Martha's sisters must be sinistral. T or F
Biology
1 answer:
irakobra [83]3 years ago
7 0

Answer:

Atleast some of Martha's offspring must be sinistral.T or F

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Question 1 of 10
padilas [110]

According to the research, the correct option is B. A <u>theory</u> is the element of the scientific process that would include the greatest amount of information about living things.

<h3>What is a theory?</h3>

It is a set of ideas or proven hypotheses that explain some phenomenon studied or a scientific description based on a set of observations or experiments.

In this sense, it is a logical system that is established from observations, axioms and postulates, and is formed by the set of concepts, propositions and definitions that are related to each other with the aim of explaining the given phenomenon.

Therefore, we can conclude that according to the research, the correct option is B. A <u>theory</u> is the element of the scientific process that would include the greatest amount of information about living things.

Learn more about a theory here: brainly.com/question/845963

#SPJ1

7 0
2 years ago
Peter and Rosemary Grant observed a small group of the large ground finches that colonized Daphne Major in the Galápagos Islands
erica [24]

Answer:

1) Founder effect and genetic drift: Small colonizing population did not represent the original gene pool of the source population and was more likely to undergo genetic drift.

2) Natural selection

Explanation:

Evolution of the population of the finches with larger beaks might have occurred due to one of the following mechanisms:

a) Founder effect and genetic drift: Since the size of the colonizing population was small, it did not carry all the genes and their alleles present in the gene pool of the original population. The small population size made it more likely to evolve by any chance event.  

b) Natural selection: The availability of different food types in the new habitat led to the natural selection of the larger beaks as the finches with larger beaks might have been able to better exploit the available food resources.  

8 0
3 years ago
Please help! I will mark brainliest:)
Olegator [25]

Answer:

mark me brainliest plss

Explanation:

An organism is made up of four levels of organization: cells, tissues, organs, and organ systems. These levels reduce complex anatomical structures into groups; this organization makes the components easier to understand.

you are correct believe me

5 0
2 years ago
How do organ systems differ from each other? Why do they look different?
guapka [62]

Answer:

The body has levels of organization that build on each other. Cells make up tissues, tissues make up organs, and organs make up organ systems. The function of an organ system depends on the integrated activity of its organs.Our body structures are arranged into several different systems, each with its own specific function.

5 0
3 years ago
Read 2 more answers
1. Compare and contrast thermocline and pycnocline.
Ket [755]
A Thermocline is the temperature of water, while Pycnocline is the density of water. Both are a type of ecoline. I'll update if you need more information.
6 0
3 years ago
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