![martinjohnsond079](/avatars/27255.jpg)
martinjohnsond079
16.02.2021 •
Biology
Which of the following is a TRUE statement about crossing over?
A) Crossing over occurs in both mitosis and meiosis I.
B) Crossing over occurs during prophase I of meiosis; because of crossing over, genetic variation in the resulting gametes is increased.
C) Crossing over occurs in telophase II of meiosis; it decreases the genetic variability in the gametes produced.
D) Crossing over decreases genetic variation.
Solved
Show answers
More tips
- H Health and Medicine How to Improve Your Posture?...
- A Animals and plants How to Properly Care for a Pet Decorative Rabbit at Home?...
- C Computers and Internet How to Check the Speed of My Internet?...
- H Health and Medicine 10 Ways to Cleanse Your Colon and Improve Your Health...
- W Work and Career How to Write a Resume That Catches the Employer s Attention?...
- C Computers and Internet Е-head: How it Simplifies Life for Users?...
- F Family and Home How to Choose the Best Diapers for Your Baby?...
- F Family and Home Parquet or laminate, which is better?...
- L Leisure and Entertainment How to Properly Wind Fishing Line onto a Reel?...
- L Leisure and Entertainment How to Make a Paper Boat in Simple Steps...
Answers on questions: Biology
- B Biology PLEASE REPLY QUICKLY Where does the biosphere exist? A. From the deapest ocean, to high in the air B. Only from the ocean to earth s surface C. Only on top of earth s surface...
- B Biology In the 10%/90% Rule,what amount is lost as heat and what amount is transferred to the next tropic level?...
- B Biology Which vitamin aids in the conversion of tryptophan to niacin?...
- B Biology William is testing what type of light best bean plants grow. he plants four beans in four separate pots. he places each pot in a different room and subjects them to different...
- B Biology While auditory sensory memory can last for about visual sensory memory lasts for about...
- B Biology If the hoover dam were removed, what is a reasonable prediction of the most significant environmental impact?...
- B Biology When does cell differentiation occur...
- B Biology Which set of these describes mutations that cause skin cancer and lung cancer? a. somatic mutations b. both a & b c. gametic mutations d. neither a or b...
- B Biology List four human activities that are current threats to biodiversity...
- B Biology List four human activities that are a threat to biodiversity...
Ответ:
I don’t know the answer I just need some points to ask more questions
Explanation:
Ответ:
Explanation:
1. A)Plants absorb water from the soil by osmosis. Root hair cells are adapted for this by having a large surface area to speed up osmosis. The absorbed water is transported through the roots to the rest of the plant where it is used for different purposes. They have a large surface area, due to their hair-like projections, which eases uptake.
B) refer the picture
2. The end walls are removed from each end, forming an uninterrupted tube, so water can pass through easily.Their walls are thickened with a woody substance called lignin, which helps to support the xylem vessels and stops them collapsing inwards.There are small pits in the cell wall where is no lignin so water and ions can move into and out of the vessels.
3. They absorb mineral ions by active transport, against the concentration gradient. Root hair cells are adapted for taking up water and mineral ions by having a large surface area to increase the rate of absorption.
4. Plants absorb water through their entire surface – roots, stems and leaves because of this osmosis occurs and the water is absorbed by the root hairs through cell membranes from the soil. Then the root hair cells become more turgid and their osmotic pressure falls.